Blood and fecal samples are collected from a man with dysentery to determine the causative agent and appropriate treatment.Which of the following would most clearly indicate amebic infection?

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Quizplus · Accepted Answer

A Wheatley's trichrome stain is used specifically to identify protozoa, including the causative agent of amebic dysentery, Entamoeba histolytica. It would show the presence of a protozoa with ingested red blood cells. Immunological tests or Gram stains are not specific to revealing amebic infections, and endospore stains are not relevant in this case as amebas do not form endospores.

Blood and Fecal Samples Are Collected from a Man with Dysentery