Lambda bacteriophage HindIII fragments were prestained with various nucleic acid dyes, run on a 0.7% agarose gel, and visualized using a standard 300 nm UV transilluminator. From left to right, the dyes used were: POPO-1 (Cat. No. P3580), BOBO-1 (Cat. No. B3582), YOYO-1 (Cat. No. Y3601), TOTO-1 (Cat. No. T3600), JOJO-1 (Cat. No. J11372), POPO-3 (Cat. No. P3584), LOLO-1 (Cat. No. L11376), BOBO-3 (Cat. No. B3586), YOYO-3 (Cat. No. Y3606), and TOTO-3 (Cat. No. T3604) nucleic acid stains. The longest-wavelength stains are barely visible to the eye but can be detected with infrared-enhanced films and imaging equipment.