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Human pancreatic islet by immunostaining. Nuclei of cells are shown in blue (DAPI). Beta cells are shown in green (Insulin), Delta cells are shown in white (Somatostatin). Beta cells (β-cells) are specialized endocrine cells located within the pancreatic islets of Langerhans responsible for the production and release of insulin and amylin. [1]
The sickle cell trait provides a survival advantage against malaria fatality over people with normal hemoglobin in regions where malaria is endemic. The trait is known to cause significantly fewer deaths due to malaria, especially when Plasmodium falciparum is the causative organism.
[citation needed] The highest specific growth' rates (μ max) cells can attain is equal to the critical dilution rate (D' c): D = μ max S K S + S , {\displaystyle D=\mu _{\max }{S \over K_{S}+S},} where S is the substrate or nutrient concentration in the chemostat and K S is the half-saturation constant (this equation assumes Monod kinetics).
Microsoft Excel is a spreadsheet editor that originally competed with the dominant Lotus 1-2-3 and eventually outsold it. Microsoft released the first version of Excel for the Mac OS in 1985 and the first Windows version (numbered 2.05 to line up with the Mac) in November 1987.
The saccharide of the glycolipid will bind to a specific complementary carbohydrate or to a lectin (carbohydrate-binding protein), of a neighboring cell. The interaction of these cell surface markers is the basis of cell recognitions, and initiates cellular responses that contribute to activities such as regulation, growth, and apoptosis. [7]
They were formerly known as Clara cells. Club cells are found in the ciliated simple epithelium. These cells may secrete glycosaminoglycans to protect the bronchiole lining. Bronchiolar cells gradually increase in number as the number of goblet cells decrease. One of the main functions of club cells is to protect the bronchiolar epithelium.
In biology, cell signaling (cell signalling in British English) is the process by which a cell interacts with itself, other cells, and the environment. Cell signaling is a fundamental property of all cellular life in prokaryotes and eukaryotes. Typically, the signaling process involves three components: the signal, the receptor, and the effector.
Collision cell from a Waters Xevo TQ-S triple quadrupole mass spectrometer. Collision-induced dissociation (CID), also known as collisionally activated dissociation (CAD), is a mass spectrometry technique to induce fragmentation of selected ions in the gas phase.