Cytolysis Cell lysis

cytolysosome Membrane-bounded region of cytoplasm that is subsequently digested.

Cytomegalovirus Probably the most widespread of the Herpetoviridae group. Infected cells enlarge and have a characteristic inclusion body (composed of virus particles) in the nucleus. Causes disease only in utero (leading to abortion or stillbirth, or to various congenital defects), although can be opportunistic in the immunocompromised host.

cyton 1. The region of a neuron containing the nucleus and most cellular organelles. 2. In Cestodes (e.g. tapeworms), the syncytial epithelium that forms the tegument has the nucleated, proximal cytoplasm or cyton, sunk deep in the parenchyma. The cyton region contains Golgi complexes, mitochondria, rough ER and other organelles involved in protein synthesis and packaging. 3. In cercaria of Schistosoma mansoni cercaria, an aggregate of subtegumental cells is found in a small, dorsoanterior area. These highly amorphous cell types, designated as cyton II, have a hete-rochromatic nucleus and a cytoplasm that is elaborated into coarse, tortuous processes.

cytonectin A 35 kDa adhesion protein, independent of divalent cations, expressed in a variety of organs and tissues, being evolutionarily conserved from human to avian species; overexpressed in Alzheimer's disease entorhinal cortex.

cytonemes Extensions produced by epithelial cells; other names include filopodia and cell feet.

cytophotometry Examination of a cell by measuring the light allowed through it following staining.

cytoplasm Substance contained within the plasma membrane excluding, in eukaryotes, the nucleus.

cytoplasmic bridges Plasmodesmata Thin strands of cytoplasm linking cells as in higher plants, Volvox, between nurse cells and developing eggs, and between developing sperm cells. Unlike gap junctions, allows the transfer of large macromolecules.

cytoplasmic determinants Slightly imprecise term usually applied to non-randomly distributed factors in maternal (oocyte) cytoplasm that determine the fate of blas-tomeres derived from this region of the egg following cleavage. Thus blastomeres containing cytoplasm derived from the apical region (animal pole) of the echinoderm egg form ectodermal tissues. Can be used even more generally of any feature in the cytoplasm that determines how a process or activity proceeds.

0 0

Post a comment