0 a network of tubes within a cell that transports substances inside the cell and is needed for the production of proteins
1 a network of tubes within a cell that transports substances inside the cell and is needed for the production of proteins (= chemicals that are a necessary part of cells of living things)
Although plastids remained unchanged, further development of the endoplasmic reticulum was manifested by longer profiles.
Nuclear profiles were markedly abnormal, plasmalemma withdrawal (arrowheads) could be seen and the profiles of endoplasmic reticulum were dilated (a).
Note the smooth and rough endoplasmic reticulum and gap junctions between theca-interna cells.
In the cortex of the oocytes the cisternae of the endoplasmic reticulum were no longer present.
These complexes appear occasionally to be associated with vesicles of smooth endoplasmic reticulum.
Microtubules and the endoplasmic reticulum are highly interdependent structures.
The tegument is a syncytial stratum, laden with membrane-bound, electron-lucid and electron-dense vesicles, mitochondria, ribosomes and smooth endoplasmic reticulum.
One interesting protein is calreticulin, a calcium-binding protein that, in mammals, is normally located in the endoplasmic reticulum.
