Immunoglobulins are produced by -: (A) Macrophages, (B) B-cells, (C) T-cells, (D) NK-cells
Answer is B. Immunoglobulin (Ig),is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune systema Ref: Ananthanarayan & Panikers textbook of microbiology 9th edition pg:94