*No purchase necessary. This promotion is available only to life science professionals 21 years or older in the US (excluding Puerto Rico) and Canada. Free window clings are available to eligible participants who register on the Life Technologies website at no later than May 1, 2014 or until promotional supplies are depleted, whichever comes first. The estimated value of the window cling is $0.10 USD. Limit three (3) free window clings per person (one of each design). By registering, you warrant that you are not prohibited by employment, contract, or law from accepting a gift from Life Technologies. Offer void in where prohibited, licensed or restricted by federal, state, provincial, or local laws or regulation or agency/institutional policy. Other restrictions may apply.