To provoke such recoil, you do not have to resemble a sex organ.

NEWYORKER: Once Upon a Time

The male sex organ and its potential applications are contemplated endlessly, inside and out, with Seth and Evan turning ideas over in their minds with the same mixture of curiosity, creativity and awe scientists dedicate to quantum physics and basketball fans reserve for the career of Steve Nash.

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However, he said that if the patient was in severe heart failure, then receiving an non sex-matched organ would still be better than waiting longer.

BBC: Surgery

The male donor acknowledged that he had engaged in unprotected sex with another man after he was screened for HIV, but before he donated the organ.

WSJ: CDC Urges More HIV Tests Before Transplants