Which two types of connective tissue cells are involved in immune response?

Mast cells and plasma cells play crucial roles in the immune response. Mast cells are strategically located in tissues and are key players in allergic reactions and inflammation. They release histamine and other chemicals that contribute to inflammatory processes and attract other immune cells to sites of infection or injury.

Plasma cells, on the other hand, are derived from B lymphocytes and are responsible for the production of antibodies. These antibodies are essential for identifying and neutralizing pathogens such as bacteria and viruses, thus forming an important part of the body's adaptive immune response.

The combination of mast cells triggering inflammatory responses and plasma cells producing specific antibodies provides a robust defense against various pathogens, making this pair particularly significant in the context of immune response.

Other options involve cell types that either do not play a direct role in immune responses or are involved in other bodily functions, such as adipocytes, which are more related to fat storage, and fibrocytes, which are involved in tissue structure or repair rather than directly combatting pathogens.