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A cell culture assay is any method used to assess the cytotoxicity of a material. [1] [2] This refers to the in vitro assessment of a material to determine whether it releases toxic chemicals in the cell. It also determines if the quantity is sufficient to kill cells, either directly or indirectly, through the inhibition of cell metabolic pathways.
Cytotoxicity is the quality of being toxic to cells.Examples of toxic agents are toxic metals, toxic chemicals, microbe neurotoxins, radiation particles and even specific neurotransmitters when the system is out of balance.
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Complement-dependent cytotoxicity (CDC) is an effector function of IgG and IgM antibodies.When they are bound to surface antigen on target cell (e.g. bacterial or viral infected cell), the classical complement pathway is triggered by bonding protein C1q to these antibodies, resulting in formation of a membrane attack complex (MAC) and target cell lysis.
A cell rounding assay (cytotoxicity assay) has been developed to diagnose C. difficile infection. [11] Enzyme-linked immunosorbent assays (ELISAs) have been used to detect TcdA and TcdB with specific antibodies. When used with an ELISA, the cytotoxicity assay is the "gold standard" when used on Vero cells for C. difficile diagnosis. [11]
A viability assay is an assay that is created to determine the ability of organs, cells or tissues to maintain or recover a state of survival. [2] Viability can be distinguished from the all-or-nothing states of life and death by the use of a quantifiable index that ranges between the integers of 0 and 1 or, if more easily understood, the range ...
An important example of such a complex protein is the hormone erythropoietin. The cost of growing mammalian cell cultures is high, so research is underway to produce such complex proteins in insect cells or in higher plants, use of single embryonic cell and somatic embryos as a source for direct gene transfer via particle bombardment, transit ...
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