Not terribly impressed with the NIH since it seems they clearly haven't a flaming clue what it means to be male or female. Something that one would think it would be essential to whatever services they're providing.

For example, they rather cluelessly insist that "every cell has a sex":

NIH: "FINDINGS AND RECOMMENDATIONS

Every Cell Has a Sex

The biological differences between the sexes ...."

ncbi.nlm.nih.gov/books/….

For one thing, not every cell -- red blood cells for example -- have X or Y chromosomes. For another, going by Trump's EO that to have a sex is to produce large or small "reproductive cells", there is no way on gawd's green earth that any liver or heart cell is going to be producing those reproductive cells.