单抗

单抗	dān kàng	(immunology) monoclonal antibody (abbr. for 单克隆抗体)
单	Shàn	surname Shan
单	chán	used in 单于
单	dān	bill / list / form / single / only / sole / odd number / CL:个
抗	kàng	to resist / to fight / to defy / anti-