| isolation of cryptococcus neoformans from pigeon (columba livia) droppings in mexico city. | to determine the ecological and epidemiological significance of pigeon excrement in cryptococcosis in mexico city, 251 samples of pigeon droppings were studied. these were collected from houses, public buildings, churches, parks and pigeon nests. each sample was suspended 1:10 in isotonic saline solution and then cultured in staib medium. identification of cryptococcus neoformans was performed based on the development of brown-coloured colonies and the presence of encapsulated yeasts. of 251 sam ... | 1994 | 7746290 |