During primitive times, what might the witch doctor give a person to relieve pain or illness?

During primitive times, the herbs and plants were given to a person to relieve pain or illness by witch doctor. 
Additionally, the tribe witch doctors treated illness with ceremonies to drive out evil spirits, people believed that the cause of disease and illness was a punishment from the Gods. 

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.