although thyroid cells which grow as a monolayer have a thyrotropin receptor on their plasma membranes with the same in vitro binding properties as the thyrotropin receptor on the plasma membranes of the follicle-forming thyroid cells , there is a 1- to 2-fold greater number of receptors per mg of membrane protein when follicle-forming and monolayer cultures are compared ...
C0007634
cells
C0007603
plasma membranes