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light chain

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.02 sec.
light chain
n.
The smaller of the two types of polypeptide chains in immunoglobulins, consisting of an antigen-binding portion with a variable amino acid sequence, and a constant region with an amino acid sequence that is relatively unchanging.
light chain
The smaller of the two types of polypeptide chains in an antibody molecule. A light chain consists of an antigen-binding portion with a variable amino acid sequence, and a constant region with an amino acid sequence that is relatively unchanging. The light chains are attached to the heavy chains so that the variable regions of both lie alongside each other. Compare heavy chain.


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On immunohistochemistry by the biotin-avidin immunoenzyme technique, these cells stained positive only for the kappa light chain (figure 3).
Extramedullary plasmacytoma arising from the nasal septum by Oh, Cheon H. / Ear, Nose and Throat Journal
This hypercontraction by arsenite was well correlated with the extent of myosin light chain (MLC) phosphorylation stimulated by phenylephrine.
Inorganic arsenite potentiates vasoconstriction through calcium ... by Chung, Jin-Ho / Environmental Health Perspectives
A regulatory and an alkali light chain are associated with each of the heavy chains.
Human skeletal muscle fiber type classifications. (Update) by Binder-Macleod, Stuart A / Physical Therapy
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