these cells contain two distinctive constitutents : juxtanuclear bundles of tightly packed filaments , the members of which are separated from one another by only approximately 100 a , and large numbers of dense-cored vesicles ( 400-2200 a in diameter ) , which appear to arise from an agranular tubular reticulum distinct from the golgi apparatus .
C0007634
cells
C0010851
filaments