The Complementarity-Determining Regions (CDR) of Human Immunoglobulin G

Multiple Choice

The complementarity-determining regions (CDR) of human immunoglobulin G

A) are common to the general structure of all immunoglobulin domains.
B) consist of short segments of highly variable amino acid sequence.
C) form covalent complexes with antigens.
D) have been identified only on the light chain polypeptides.
E) participate in the binding of these proteins to cell surface receptors.