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Illustration of a eukaryotic cell membrane Comparison of a eukaryotic vs. a prokaryotic cell membrane. The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space).
Paramural bodies are membranous or vesicular structures located between the cell walls and cell membranes of plant and fungal cells. [1] [2] When these are continuous with the cell wall, they are termed lomasomes, while they are referred to as plasmalemmasomes if associated with the plasmalemma.
84094 Ensembl ENSG00000130300 ENSMUSG00000034845 UniProt Q9BX97 Q91VC4 RefSeq (mRNA) NM_031310 NM_032398 RefSeq (protein) NP_112600 NP_115774 Location (UCSC) Chr 19: 17.35 – 17.38 Mb Chr 8: 71.95 – 71.96 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Plasmalemma vesicle-associated protein is a protein that in humans is encoded by the PLVAP gene. References ^ a b c GRCh38 ...
Plasma cells, also called plasma B cells or effector B cells, are white blood cells that originate in the lymphoid organs as B cells [1] [2] and secrete large quantities of proteins called antibodies in response to being presented specific substances called antigens.
The plasma membrane portion of the plasmodesma is a continuous extension of the cell membrane or plasmalemma and has a similar phospholipid bilayer structure. [ 13 ] The cytoplasmic sleeve is a fluid-filled space enclosed by the plasmalemma and is a continuous extension of the cytosol .
T-tubules (transverse tubules) are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells.With membranes that contain large concentrations of ion channels, transporters, and pumps, T-tubules permit rapid transmission of the action potential into the cell, and also play an important role in regulating cellular calcium concentration.
They also failed to describe membrane function and had false assumptions such as that of plasma membranes consisting mostly of lipids. However, on the whole, this envisioning of the lipid bi-layer structure became the basic underlying assumption for each successive refinement in a modern understanding of membrane function. [2]
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.