Fig. 2.
Micrographs show protozoan parasites isolated from fly pools stained with different stains. Cryptosporidium spp. oocysts, a = Direct smear, b = Iodine stained, and c, d = Ziehl–Nielsen stained, 100 × oil immersion. Giardia spp. cyst, e = Direct smear, f = Iodine stained, and g = Methylene blue stained 40x. Entamoeba spp. cyst, h = Direct smear, i = Iodine stained 40x. Balantidium coli trophozoites, j = iodine-stained, k = methylene blue-stained 40x. l = Trichomonas spp. trophozoites stained with methylene blue, 40x
