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(cell and molecular biology)
The inner, semifluid portion of the cytoplasm.



in animals and plants, the interior layer of cytoplasm. The endoplasm lies next to the nucleus and contains more organoids and other inclusions than the ectoplasm. The endoplasm is distinctly marked in many protozoans and in some tissue cells, for example, fibroblasts. The cytoplasm is conventionally divided into the ectoplasm and the endoplasm.

References in periodicals archive ?
30) When the endoplasm is squeezed into the medium, vesicle movement is inhibited by adding the phosphatase inhibitor, (31) and actually, Chara myosin treated with protein kinase C loses its motile activity.
Immature cysts may have iodine-stainable glycogen clumps and rod-like structures called chromatoid bodies with smooth rounded edges in their endoplasm.
coli, a commensal in the intestinal tract of humans and pigs, in its trophozoite form has a large eccentric endosome, irregular peripheral chromatin clumping along the nuclear membrane, and endoplasm that may contain ingested bacteria, but not erythrocytes.