A preliminary study by a Wuhan medical team found the first clinical evidence the novel coronavirus (COVID-19) infection could harm male gonad functions by significantly increasing sex hormones.

CHICAGO, July 23 (Xinhua) -- Researchers at the University of Illinois (UI) found in a study that the male-to-female sex-change for anemonefish occurs first in the fish's brain and only later involves ...

“BORT” (pictured) IS ONE OF THE OLDEST MALE ROTTWEILERS LIVING IN NORTH AMERICA THAT INVESTIGATORS PUT TO WORK TO DISCOVER THE LINKAGE BETWEEN LIFELONG GONAD FUNCTION, LATE-LIFE FRAILTY, AND OVERALL ...

The gonad arises as a bipotential organ primordium. Expression of the Y-linked gene, Sry, in the bipotential gonad leads to the differentiation of Sertoli cells, which orchestrate testis development.