Adoptive immunity is by:: (A) Infection, (B) Injection of antibodies, (C) Injection of lymphocytes, (D) Immunization
Answer is C. Ans. is 'c' i.e., Injection of lymphocytes(Ref: Jawetz, 27th/e, p. 130)* An extract of immunologically competent T - lymphocytes, known as transfer factor can be used in the treatment of lepromatous leprosy when CMI is low.