Polyclonal antibodies are typically produced by

Polyclonal antibodies are typically produced by

• A. Single B cell clone
• B. Multiple B cell clones
• C. T cells only
• D. Plasma cells only

Answer: (B)

Polyclonal antibodies come from many B cell clones. When an antigen is introduced, a diverse set of B cells—each clone recognizing a different part (epitope) of that antigen—becomes activated. These B cells mature into plasma cells that secrete antibodies, and the resulting serum is a mixture of antibodies from all those clones. That diversity gives polyclonal antibodies the ability to bind multiple epitopes on the same antigen, rather than a single, uniform specificity. T cells don’t produce antibodies, and while plasma cells are the ones that secrete antibodies, in polyclonal preparations they come from many different B cell clones rather than just one.

Polyclonal antibodies come from many B cell clones. When an antigen is introduced, a diverse set of B cells—each clone recognizing a different part (epitope) of that antigen—becomes activated. These B cells mature into plasma cells that secrete antibodies, and the resulting serum is a mixture of antibodies from all those clones. That diversity gives polyclonal antibodies the ability to bind multiple epitopes on the same antigen, rather than a single, uniform specificity. T cells don’t produce antibodies, and while plasma cells are the ones that secrete antibodies, in polyclonal preparations they come from many different B cell clones rather than just one.