People often compare fetuses to parasites when they're arguing that abortions aren't a big deal and/or an entirely personal decision. I'd consider transplant o

People often compare fetuses to parasites when they're arguing that abortions aren't a big deal and/or an entirely personal decision. I'd consider transplant organs to be a better analogy to unborn humans. At least both have human DNA. That's not to say the mechanisms the autoimmune system uses to identify and reject intruders aren't manipulated by parasites. It is probably true that learning how that works could help more women have healthy pregnancies.