the appearance of new polyribosomes in the cytoplasm on induction of metamorphosis was co-ordinated in time with a stimulation of synthesis of phospholipids of the smooth and rough endoplasmic reticulum , followed by a gradual shift in preponderance from the smooth to the rough type of microsomal membranes .
C0010834
cytoplasm
C0230779
rough endoplasmic reticulum