3 ms·
There's a hypothesis that a viral gene made mammalian placenta possible: [pubmed](https://pubmed.ncbi.nlm.nih.gov/10693809/ https://pubmed.ncbi.nlm.nih.gov/1069
by wildylion 1y ago
There's a hypothesis that a viral gene made mammalian placenta possible: [pubmed](https://pubmed.ncbi.nlm.nih.gov/10693809/ https://pubmed.ncbi.nlm.nih.gov/10693809/).
And there's not even the only one (there are other syncitins).
Disclaimer: I'm not a medical professional