1) to make a breakthrough 2) to be used as guinea pigs 3) to conduct clinical trials 4) to be subjected to  5) to inhale gasses 6) to lead to serious consequences  7) to cause side effects 8) blood transfusion 9) to produce the additive 10) to contract a disease 11) to be exposed to radiation 12) to reverse a process

Science NAF

аутор
Угради

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