Transwoman/transman who undergo surgery do not pass. Science shows how to use salamander genes to produce retroviruses to regrow organs humans lost
Produce retroviruses to ungrow phallus/vulva and grow vulva/phallus?
Calculus of how genes grow human organs:
https://sc.edu/study/colleges_schools/artsandsciences/mathematics/our_people/directory/vasquez_paula.php
https://www.sciencedirect.com/science/article/pii/S0898122109005343
https://www.engadget.com/2019-04-20-hitting-the-books-infinite-powers.html
https://phys.org/news/2019-06-genes-interact-tissues.html
https://openstax.org/books/concepts-biology/pages/18-2-development-and-organogenesis
Use calculus to figure out how to alter genes to reuse for trans-sexuals.
Science shows us how the fetus blastocysts produce endoderms, mesoderms and ectoderms (which form all human organs):
https://training.seer.cancer.gov/disease/categories/tissues.html
https://www.ncbi.nlm.nih.gov/books/NBK554394/
https://embryo.asu.edu/pages/mesoderm
https://embryo.asu.edu/pages/endoderm
https://embryo.asu.edu/pages/ectoderm
Science shows us the full genome of humans, and thus, how the blastocysts form all human organs:
https://hgdownload.soe.ucsc.edu/downloads.html
https://www.ncbi.nlm.nih.gov/genome/guide/human/
Humans have genes to ungrow some organs, suchas adrenal glands and thymus glands:
https://www.britannica.com/science/atrophy
Some genes of humans cause muscle atrophy and hair loss (but those are not organs.)
Just look up which genes ungrow organs, to use to produce retroviruses to ungrow human phallus/vulva, look up which genes grow vulva/phallus, and use to produce retroviruses to grow vulva/phallus, plus to ungrow (or grow) breast's glands
New Crispr-Cas uses?