Final answer:
CC or CXC in a name refers to antibody structure. The arrangement of constant and variable regions in an antibody defines its function and antigen specificity.
Step-by-step explanation:
CC or CXC in a name refers to antibody structure. Antibodies are proteins that are produced by B cells in response to an antigen. They have a specific structure made up of constant and variable regions, and the CXC or CC designation refers to the arrangement of these regions. The constant regions are responsible for the effector functions of the antibody, while the variable regions determine the antigen specificity.