Ecology of pathogenic yeasts in Amazonian soil.

In an investigation of Amazonian soil as a natural reservoir for pathogenic fungi, 1,949 soil samples collected from diverse geographical and ecological settings of the Brazilian Amazon Basin were analyzed for the presence of non-keratinophilic fungi by the indirect mouse inoculation procedure and for the presence of keratinophilic fungi by the hair bait technique. All soil samples were acidic with low pH values. From 12% of the soil samples, 241 yeast and yeastlike isolates pertaining to six genera and 82 species were recovered, of which 63% were Torulopsis and 26% were Candida species.

Interstitial cells of Myotis myotis ovary during gestation. An ultrastructural study.

The purpose of this paper was to describe the ultrastructure of the interstitial cells of the bat ovary (Myotis myotis) during gestation (May and June). The Myotis myotis ovary has great amounts of interstitial tissue comprising of polyhedral elements with abundant cytoplasm filled with lipid droplets. Large mitochondria with an unusual parallel arrangement of the tubular cristae were observed.

Intraepithelial leukocytes in the Myotis myotis mammary gland.

The morphological and ultrastructural characteristics of intraepithelial leukocytes in the alveolar epithelium of the mammary gland were described in female bats during late pregnancy and lactation. Intraepithelial lymphocytes were principally located in the basal portion of the alveolar epithelium, intermixed with alveolar epithelial cells. They exhibited a spherical shape, with some cytoplasmic prolongations or pseudopodia in association with adjacent epithelial cells.