The appearance of two fibrils joined in the shape of a "bird's beak" is characteristic
of the cysts of which organism?
a. Enteromonas hominis.
b. Endolimax nana.
d. Leishmania species.
A diagnostic method used to recover the infective forms of Trypanosoma cruzi is:
a. Fecal concentration.
b. Collection of urethral or vaginal discharge.
d. Collection of duodenal aspirates.
Which of the following sites serves as a habitat for stages of the African
a. Lymph nodes.
b. Spleen and other internal organisms.
Central nervous system.
d. All of the above.
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