subsequent addition of vasopressin produced an increase in the cell volume of the granular cells , manifested by some or all of the following changes : increased area of granular cell profiles as observed in sections , rounding of the cell nucleus , displacement of the two components of the nuclear envelope , loss of nuclear heterochromatin , sacculation of the endoplasmic reticulum and the golgi apparatus , and reduction in the electron density of the cell cytoplasm .
C0014239
endoplasmic reticulum
C0007634
cell