Why do we hear about medical breakthroughs in mice, but rarely see them translate into cures for human disease? … [In] large part from a common root cause: a severe shortage of ethically sourced human bodies.
[We are forced] to rely heavily on animals in medical research, a practice that can’t replicate major aspects of human physiology and makes it necessary to inflict harm on sentient creatures. In addition, the safety and efficacy of any experimental drug must still be confirmed in clinical trials on living human bodies. These costly trials risk harm to patients, can take a decade or longer to complete, and make it through to approval less than 15% of the time.
Hellbound and Down 