幹細胞

stem cell

tree trunk / main part of sth / to manage / to work / to do / capable / cadre / to kill (slang) / to fuck (vulgar) / (coll.) pissed off / annoyed

thin or slender / finely particulate / thin and soft / fine / delicate / trifling / (of a sound) quiet / frugal

cell (biology)

placenta / womb / born of the same parents