hybrid rule

To clarify these "hybrids" are for organ transplant. This research was approved in 2019. https://www.scientificamerican.com/article/japan-approves-first-human-animal-embryo-experiments/

And researchers have already started trialing transplant of humanized organs in very limited ways in just the last couple years. https://www.scientificamerican.com/article/pig-to-human-organ-transplants-will-finally-begin-clinical-trials-this-year/ https://www.science.org/content/article/here-s-how-scientists-pulled-first-pig-human-heart-transplant