Scientists and physicians have developed vaccines against a variety of infectious diseases. how does administering a vaccine protect the body from an infection? a. the vaccine stimulates the bone marrow to release more immune system cells, which attack and remove pathogens. b. the vaccine stimulates cells of the immune system to produce antibodies against a wide variety of pathogens. c. the vaccine stimulates cells of the immune system to produce antibodies against a specific pathogen. d. the vaccine acts like cells of the immune system by attacking a specific pathogen.