taken together with the finding that the trans cisternae of golgi apparatus and forming secretory vesicles have an acidic ph ( k. g. w. anderson and r. k. pathak , cell , 40 , 685-643 , 1985 ) , the present results suggest that an acidic environment in these compartments is required for intracellular proteolytic activation of ndv fusion proteins .
C0886515
secretory
C0007634
cell