Please provide a link to the crackpot website you’re using for your expertise on this subject.
I don’t need to justify myself to disgusting people like you who profit off the backs of unborn children and gaslight those of us who say it’s wrong. If you’re moral compass is that broken than maybe you should spend less time on FR and more time praying.
https://takingrecourse.com/dr-paul-casey-md-the-everything-was-tested-on-hek-lie/
These two articles link many sources that will satisfy your question. If you continue to insist on your initial premise, then you are choosing to remain blind.