both of the cellular species appeared to be enclosed within membranes similar to those containing parathyroid hormone and its immediate biosynthetic precursor because they were associated with the membrane fraction of the cell , were not digested when the membranes were exposed to trypsin , and were extracted from these membranes , as were parathyroid hormone and proparathyroid hormone , with dilute sodium deoxycholate .
C0007634
cellular
C0007603
membrane