Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of theinfluenza hemagglutin (A/Beijing/22808/2009 (H1N1)) (ADD64203.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Manni...
Catalog: 40035-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of theinfluenza hemagglutin (A/Beijing/22808/2009 (H1N1)) (ADD64203.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Manni...
Catalog: 40035-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment of Influenza A virus H1N1 hemagglutinin (A/Brevig Mission/1/1918 (H1N1)) (AAD17229.1) (Met 1-Arg 344), termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 ...
Catalog: 11068-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment of Influenza A virus H1N1 hemagglutinin (A/Brevig Mission/1/1918 (H1N1)) (AAD17229.1) (Met 1-Arg 344), termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 ...
Catalog: 11068-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment of Influenza A virus H1N1 hemagglutinin (A/Brevig Mission/1/1918 (H1N1)) (AAD17229.1) (Met 1-Arg 344), termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 ...
Catalog: 11068-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment of Influenza A virus H1N1 hemagglutinin (A/Brevig Mission/1/1918 (H1N1)) (AAD17229.1) (Met 1-Arg 344), termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 ...
Catalog: 11068-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment (Met 1-Arg 343) of Influenza A virus (A/Brisbane/59/2007 (H1N1)) (ACA28844.1) HA, termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mann...
Catalog: 11052-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment (Met 1-Arg 343) of Influenza A virus (A/Brisbane/59/2007 (H1N1)) (ACA28844.1) HA, termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mann...
Catalog: 11052-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment (Met 1-Arg 343) of Influenza A virus (A/Brisbane/59/2007 (H1N1)) (ACA28844.1) HA, termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mann...
Catalog: 11052-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding an N-terminal segment (Met 1-Arg 343) of Influenza A virus (A/Brisbane/59/2007 (H1N1)) (ACA28844.1) HA, termed as HA1 subunit, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mann...
Catalog: 11052-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/New Caledonia/20/1999 (H1N1)) (CAC86622.1), termed as HA1, fused to a C-terminal polyhistidine tag, with one amino acid mutation (203 Asp/Asn). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2...
Catalog: 11683-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/New Caledonia/20/1999 (H1N1)) (CAC86622.1), termed as HA1, fused to a C-terminal polyhistidine tag, with one amino acid mutation (203 Asp/Asn). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2...
Catalog: 11683-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/New Caledonia/20/1999 (H1N1)) (CAC86622.1), termed as HA1, fused to a C-terminal polyhistidine tag, with one amino acid mutation (203 Asp/Asn). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2...
Catalog: 11683-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/New Caledonia/20/1999 (H1N1)) (CAC86622.1), termed as HA1, fused to a C-terminal polyhistidine tag, with one amino acid mutation (203 Asp/Asn). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2...
Catalog: 11683-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of of the influenza A H1N1 (A/New York/18/2009 (H1N1)) hemagglutinin (ACU13097.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7....
Catalog: 40009-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of of the influenza A H1N1 (A/New York/18/2009 (H1N1)) hemagglutinin (ACU13097.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7....
Catalog: 40009-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of of the influenza A H1N1 (A/New York/18/2009 (H1N1)) hemagglutinin (ACU13097.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7....
Catalog: 40009-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 344) of of the influenza A H1N1 (A/New York/18/2009 (H1N1)) hemagglutinin (ACU13097.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7....
Catalog: 40009-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Ohio/UR06-0091/2007 (H1N1)) (ABW40422.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11687-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Ohio/UR06-0091/2007 (H1N1)) (ABW40422.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11687-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Ohio/UR06-0091/2007 (H1N1)) (ABW40422.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11687-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Ohio/UR06-0091/2007 (H1N1)) (ABW40422.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11687-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Puerto Rico/8/1934 (H1N1)) (ABD77675.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol,...
Catalog: 11684-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Puerto Rico/8/1934 (H1N1)) (ABD77675.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol,...
Catalog: 11684-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Puerto Rico/8/1934 (H1N1)) (ABD77675.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol,...
Catalog: 11684-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza hemagglutinin (A/Puerto Rico/8/1934 (H1N1)) (ABD77675.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol,...
Catalog: 11684-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza A H1N1 hemagglutinin (A/Solomon Islands/3/2006 (H1N1)) (ABU99109.1), fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% ...
Catalog: 11708-V08H1-U25
Size: 5 × 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza A H1N1 hemagglutinin (A/Solomon Islands/3/2006 (H1N1)) (ABU99109.1), fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% ...
Catalog: 11708-V08H1-U250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza A H1N1 hemagglutinin (A/Solomon Islands/3/2006 (H1N1)) (ABU99109.1), fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% ...
Catalog: 11708-V08H1-U5
Size: 5 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 343) of the influenza A H1N1 hemagglutinin (A/Solomon Islands/3/2006 (H1N1)) (ABU99109.1), fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% ...
Catalog: 11708-V08H1-U50
Size: 50 µg