Baby Fae body began generating isohaemagglutinins, but a suitable donor could not be found in time. Prior to the procedure, no infant heart transplant—even with human hearts—had been successfully performed due to a lack of infant human hearts. To address this issue, Bailey had become a pioneer in the research of cross-species heart transplants, which had included "more than 150 transplants in sheep, goats, and baboons". Multiple surgeons had previously experimented with baboon heart implants, leading some to speculate even that baboons could be farmed in the future for such purposes. When asked why he had picked a baboon over a primate
Anyone Who Had a Heart (song) had a kind of long-term stickability, which is so very hard to achieve in this business." Black recorded a new version of "Anyone Who Had a Heart" for her 1993 "Through the Years" album. "Anyone Who Had a Heart" backed with "They Say It's Wonderful" was the third and final Fontana release by Mary May in January 1964 following "Listen, All You Lovers" in April 1962 and "Our Day Will Come" in February 1963. Nothing else is known of her. On 7 August 2015, following Black's death, the single re-entered the charts at number 41. "Anyone Who Had a Heart"