Vaccines are used in all the forms, except _________
(a) Live-attenuated vaccines
(b) Inactivated vaccines
(c) Subunit, recombinant, polysaccharide, and conjugate vaccines
(d) Attenuated, inactivated, portions of protein, polysaccharides
I got this question by my school principal while I was bunking the class.
Question is from Immunological Preparations topic in chapter Immunological Preparations of Drug Biotechnology