| Palade granule | <cell biology> A small particulate organelle found in prokaryotes and eukaryotes and also within mitochondria and chloroplasts, but differing in size and composition. Made of two subunits, each being an RNA protein complex. Ribosomes are responsible for the translation of mRNA which may occur in the cytoplasm (see polyribosomes) or on rough endoplasmic reticulum. Origin: Gr. Soma = body (18 Nov 1997) |
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| Palade pathway | <cell biology> The routing of proteins from the site of their synthesis to the final cellular or secreted position. Several different pathways are known and others suspected. Glycosylation of the proteins may provide specific address labels for the proteins. (18 Nov 1997) |
| Palade, George | <person> Roumanian-U.S. Cell biologist and Nobel laureate, *1912. See: Palade granule, Weibel-Palade bodies. (05 Mar 2000) |
| Weibel-Palade bodies | Rod-shaped bundles of microtubules seen by electron microscopy in vascular endothelial cells. (05 Mar 2000) |
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| Weibel Palade body | <haematology> Cytoplasmic organelle found in the vascular endothelial cells of some animals, though not in the endothelium of all vessels. Although markers for endothelium, their absence does not necessarily mean the cells are not of endothelial origin. (18 Nov 1997) |