What is the role of plasma cells?
They release free antibodies into the blood
They remain latent in the body, and wait for reinfection in order to release antibodies
They engulf pathogens in the blood
They cause inflammation by secreting plasma-like fluid
They present antigens from the blood to helper T-cells for identification
Which of the following cells plays a key role in both humoral and cell-mediated immunity?
Plasma cell
Basophil
Memory B-cell
Cytotoxic T-cell
Helper T-cell
