These mice have brains that are part human. So are they mice, or men?

From ABC Science, 29 July 2018: In Greek mythology, the chimera was a beast of fire and fury; a terrifying creation part-lion, part-goat, part-serpent, and all destruction. It took demigod Bellerophon to slay the monster, driving a lead-tipped lance into its throat. One wonders what Bellerophon might have made of the chimeras running around Steve Continue reading These mice have brains that are part human. So are they mice, or men?