quantitative comparison of pinealocyte ultrastructure revealed larger cross-sectional areas of cytoplasma , nucleus , golgi apparatus , granular endoplasmic reticulum , mitochondria and vacuoles containing flocculent material as well as higher number of dense-core vesicles in the animals kept in short photoperiod ( ld 8 : 16 ) as compared to those in animals kept in long photoperiod ( ld 16 : 8 ) .
C0010834
cytoplasma
C0230779
granular