(CNS News) The U.S. Food and Drug Administration signed a new contract on July 25 to acquire “fresh” human fetal tissue to transplant into “humanized mice” so that these mice will have a functioning “human immune system,” according to information published by the FDA and the General Services Administration.

“The objective is to acquire Tissue for Humanized Mice,” said a June 13 FDA “presolicitation notice” for the contract.