 biosynthesi glycoprotein incorpor glucosamin- liver plasma protein rat glucosamin-1- administ intraven fed rat rapidli remov blood stream appear trichloroacet acid-solubl deriv tissu convers macromolecul 80 administ compound recov tissu liver activ organ accumul glucosamin rapidli convert protein-bound compon liver particul fraction microsom mitochondria releas plasma appreci accumul solubl protein liver conclud glucosamin transfer peptid chain glycoprotein stage protein releas liver particul fraction 