<prompt> Which of the following is acid-fast organism?MycoplasmaActinomycetesNocardiaChlamydia  <response>: Ans. c Nocardia. Ref. Textbook of Microbiology by Anantanarayan, 6th371FOLLOWING ARE ACID FAST STAINING POSITIVE1. M.Tb2. Nocardia3. Bacterial spores4. Lipofuschin pigment5. M. leprae6. Cryptosporidium 