the results obtained indicate that imr-32 cells acquire regulated secretory properties after in vitro drug-induced differentiation : ( a ) they assemble `` '' de novo '' '' secretory organelles , as revealed by electron microscopy and detection of secretory organelle markers , and ( b ) they are able to store [ 3h ] dopamine and to release the neurotransmitter in response to secretagogue stimuli .
C0007634
cells
C0007589
differentiation