Home » A lubricant, mucin in saliva is made up of Digestive System MCQs A lubricant, mucin in saliva is made up of February 8, 2022 13 Views Q. A lubricant, mucin in saliva is made up ofA. GlycoproteinB. PolysaccharidesC. PhospholipidsD. MyosinAnswer: Glycoprotein