Plasma cells are activated b cells that secrete antibodies.
Antibodies are manufactured by the immune system.
Plasma cells are activated b cells that secrete immune system molecules.
The molecules secreted by activated B cells are part of the:
[A] immune system
[B] Organic compounds
[C] Energy.
[D] an organism's body
[E] acetic acid
[F] harmful substances
[G] Chemical energy
[H] Veins and arteries.