Which statement about macrophages is FALSE?
Macrophages are crucial effectors and effectors of immunity. They can produce soluble factors to influence the growth and function of lymphoid and nonlymphoid tissue, as well as responding to ceain lymphokines. Plasma cells, derived from B-lymphocytes secrete immunoglobulin and not macrophages. Ref: Fundamental Immunology By William E. Paul, Page 19
They help in processing and presenting antigen to immunocompetent cells
They act as mediators in ceain cell-mediated immune reactions
They can have Fc receptors
They can produce immunoglobulins