Charcot-Leyden Crystals

Charcot-Leyden crystals and yeasts in fecal smear (trichrome stain, oil immersion). Two crystals, staining red and purple, are present along with two oval examples of yeast. Yeasts are relatively uniform in size and shape and are frequently seen in fecal smears. They usually stain red to green. Because of their small size, they must be distinguished from the oocysts of Cryptosporidium.