PubMed · 3150884
Further evidence that bovine IgM does not fix guinea pig complement.
Abstract
In a study of sera from cattle vaccinated with 3 X 10(10) cfu of Brucella abortus strain 19, it was found that IgG1 antibody measured by an indirect ELISA was the only isotype to correlate with standard complement fixing antibody titers using heated serum samples and guinea pig serum as a source of complement. A supplement of normal unheated bovine serum resulted in IgM fixing guinea pig complement, giving data similar to those obtained with unheated serum in the complement fixation test.
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K Nielsen, J R Duncan. 1988. Further evidence that bovine IgM does not fix guinea pig complement.. https://doi.org/10.1016/0165-2427(88)90107-9
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