Source:http://linkedlifedata.com/resource/umls/id/C0020852
CSP: major immunoglobulin in normal human serum, distributed evenly between the intravascular and extravascular pools; it is the major antibody of secondary immune responses and the exclusive antitoxin class.,MSH: The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B.,NCI: An immunoglobulin isotype (subclass) that characterizes secondary immune responses. This isotype is further broken down into several smaller subclasses (IgG1, IgG2a, IgG2b, IgG3 in the mouse; IgG1-4 in the human), and each subclass is differentially synthesized and secreted into the serum upon differential immune stimuli.