<prompt> Which among the following is acid fast?Entamoeba histolyticaGiardia IambiiaCryptosporidium oocystMicrosporidia  <response>: Ans : c Cryptosporidium oocystAcid last structures:Nocardiaisosporasmegma bacillimycobacteriumlegionellamicoadispermatic headbacterial spores rhodococcusCryptosporidium cystAcid fast staining was discovered by Ehrlich. Modified by Ziehl Neelson Acid fastness is a property of lipids it also depends on the integrity of cellwall. 