Stain which differentiates cryptococcus from other fungus: (A) Gram stain, (B) Acid fast stain, (C) India ink, (D) Gomori methamine silver stain
Answer is C. India ink or Nigrosine - demonstrate the capsule of Cryptococcus as a clear halo Gram stain - used to diff. b/w gram positive and gram negative Acid fast stain - used to stain Tuberculous bacteria, acid fastness is due to mycolic acid . Gomori methamine silver stain - used to stain Pneumocystis jiroveci