due to the good ultrastructural preservation of the cellular organelles obtained on glutaraldehyde-fixed , osmium tetroxide-postfixed tissue , the labelling was detected with high resolution over the cisternae of the rough endoplasmic reticulum ( rer ) , the golgi apparatus , the condensing vacuoles , the immature 'pre-zymogen ' granules , and the mature zymogen granules .
C0007634
cellular
C1180016
the cisternae of