No purchase necessary. This promotion is available only to life science professionals 21 years or older in the US and Canada. Free antibodies for stem cell research poster is available to eligible participants who register on the lifetechnologies.com website while gift supplies last. The estimated value of the free gift item is $2.50 USD. One free gift per person. Healthcare professionals may not participate in this promotion. 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.