nonciliated cells of prenatal animals had large amounts of cytoplasmic glycogen ( over 60 % of the cell cytoplasm ) , few mitochondria ( less than 15 % ) , little granular endoplasmic reticulum ( ger ) ( 20 % ) , minimal aer ( less than 5 % ) , and no granules .
C0010834
cytoplasm
C0026237
mitochondria