Why don’t our bodies attack embryos or pregnancies?

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Since our bodies are designed to attack “foreign” objects like viruses and bacteria’s, why don’t they attack pregnancies and embryos? Especially in surrogacy where some embryos don’t have any DNA connected to the body growing the embryo, why aren’t they attacked by our “defense”?

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2 Answers

Anonymous 0 Comments

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Anonymous 0 Comments

Your submission has been removed because questions that ask “what if….” and “what would happen if…”, “why don’t….” and “why doesn’t…”, “what’s stopping” are rarely concepts. Typically these questions are speculative, and better suited for r/whatif, r/nostupidquestions, or /r/answers.

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