“…21 Mammaglobin B, which is also known as human secretoglobin (SCGB) 2A1 (lacryglobin, lipophilin C), is a small protein that forms heterodimers with secretoglobin 1D1 (lipophilin A) in tears. 33 Mammaglobin B is known to be normally expressed in salivary gland, mammary gland, human endometrium, 34 pituitary, testis, trachea, and ovary. 35 On the ocular surface, besides its high abundance in tear film, it is expressed in lacrimal gland, glands of Moll, and meibomian glands of the eyelid, as well as in the epithelium of the conjunctiva.…”