Table 4.

Mentions, rejections and endorsements of positive reasons (Category P)

Positive Reasons (Category P)
P.1: The creation of chimeras may advance basic research	Mention [23, 35, 54, 71, 79] Reject [8, 72] Endorse [9, 12, 13, 17, 41, 42, 59–61, 75, 76, 81, 82]
P.2: The creation of chimeras may produce benefits for humans
P.2.i: New therapies might be developed on the basis of chimera research	Mention [8, 20, 41, 43, 54, 66, 71, 79, 84] Reject [11, 22, 23] Endorse [2, 9, 12, 13, 17, 34, 35, 39, 42, 55, 60, 67, 72, 75, 85]
P.2.ii: Chimeras might serve as sources of transplantable organs and tissues	Mention [5, 63] Reject [none] Endorse [2, 4, 34, 41, 42, 51, 60, 66, 72, 85]
P.2.iii: Chimera research might open ways to human enhancement	Mention [80] Reject [none] Endorse [81]
P.3: The creation of chimeras may prevent direct harm to humans or animalsa	Mention [12, 23, 66] Reject [none] Endorse [13, 41, 42]
P.4: The creation of chimeras may have other benefitsb	Mention [46, 80] Reject [none] Endorse [13]

^a E.g. by helping to replace human subjects or laboratory animals in biomedical research

^b E.g. by fostering the preservation of endangered species, or by allowing animal enhancement