Plasma cells can only produce a single kind of antibody in a single class of immunoglobulin, in other words every B cell is specific to a single antigen, but each cell can produce several thousand matching antibodies per second.
Plasma cells can only produce a single kind of antibody in a single class of immunoglobulin. This is in other words. Every B cell is specific to a single antigen other words. Each cell can produce several thousand matching antibodies per second.