cross-reacting protein

Also found in: Acronyms.

cross-reacting protein (CRP),

an antigen that can combine with antibodies that were elicited by different antigens, or an antibody that can combine with antigens other than the one that elicited its formation.
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The cross-reacting proteins of 25, 27, and 39 kD were primarily observed in the albumin fraction (Fig.
These cross-reacting proteins were not detected when total proteins were obtained from rice seeds from which embryos were removed.