You may be happy to learn that a lot of recent stem cell work does not actually use foetal tissue. Instead, there are methods for reverting adult cells from a b

You may be happy to learn that a lot of recent stem cell work does not actually use foetal tissue. Instead, there are methods for reverting adult cells from a blood sample back into stem cells (IPSCs, or induced pluripotent stem cells). This is exciting for a number of reasons: not only does it sidestep ethical concerns, but it introduces the possibility of making stem cells--and thus, other cells--that precisely match an individual patient! On the other hand, I'd encourage you to think about the motivations of medical researchers. Nobody is actually looking for any excuse to work with embryonic tissues (or animals, placebo-controlled trials, etc): it's slow, annoying and expensive and everyone I've ever met would vastly prefer to use yeast + computational models. People do actually want to help the sick and helpless, but the tools aren't there yet to do so with nothing but yeast and computational models.