** No purchase necessary. This promotion is available only to life science professionals 21 years or older in United States and Canada. Poster request fulfillment can take up to 4–6 weeks and will last until supplies are depleted. Limit one free poster per customer. By accepting the gift, you warrant that you are not prohibited by employment, contract, or law from accepting a gift from Life Technologies. Offer void where prohibited, licensed, or restricted by federal, state, provincial, or local laws or regulation or agency/institutional policy. Other restrictions may apply.