Within the perikarya of pars compacta neurons, DAT was localized primarily to rough and smooth endoplasmic reticulum, Golgi complex, and multivesicular bodies, identifying probable sites of synthesis, modification, transport, and degradation.
22.
The other primary type of cells are the eukaryotes, which have distinct nuclei bound by a nuclear membrane and membrane-bound organelles, including mitochondria, chloroplasts, lysosomes, rough and smooth endoplasmic reticulum, and vacuoles.
23.
The plasma membrane of SGCs is thin and not very dense, and it is associated with adhesion molecules, receptors for neurotransmitters and other molecules, Within individual SGCs, there is both rough endoplasmic reticulum and smooth endoplasmic reticulum, but the latter is much less abundant.
24.
Free Ca 2 + ions are rapidly removed from the cytoplasm through Na + / Ca2 + exchangers in the plasma membrane and by sarco / endoplasmic reticulum Ca 2 + ATPases ( SERCA pumps ) that mediate Ca 2 + uptake into the smooth endoplasmic reticulum ( sER ).
25.
The ependymal cell bodies present a clear zonation, specially marked in certain species : the perinuclear region-the most distinct ultrastructural feature off virtually all species is the presence of large and dilated cisternae of the rough endoplasmic reticulum ( RER ); intermediate region constituted mainly by the RER and the Golgi apparatus ( it is not certain the involvement of the Golgi apparatus in the secretary process of the subcommissural organ ); subapical region short region, with microtubules, mitochondria and smooth endoplasmic reticulum; and an apical region projecting a large protrusion into the ventricle.
