What are the differences between plasma cells and B cells?

Memory B cells

• Are a type of white blood cells involved in adaptive immunity
• Responsible for producing antibodies
• Several types including naïve B cells, plasmablast, and plasma cells
• Functions including producing cytokines, secreting antibodies, and serving as antigen presenting cells
• All types of B cells except plasma cells can proliferate 

Plasma cells

• Are a type of activated B cells
• Main function is to secrete antibodies
• Cannot proliferate further