|
Cryptococcus Kuetzingii
''Naganishia albida'' (synonym ''Cryptococcus albidus'') is a species of fungus in the family (biology), family Filobasidiaceae. It is currently only known from its yeast state. The species was originally isolated from the air in Japan, and has subsequently been isolated from dry moss in Portugal, grasshoppers in Portugal, and Tuberculosis, tubercular lungs. Description Cultured colonies are cream to pale pink, the majority smooth with a mucoid appearance. Some are rough and wrinkled, but this is a rare occurrence. ''Naganishia albida'' is very similar to ''Cryptococcus neoformans'', but can be differentiated because it is phenol oxidase-negative, and, when grown on Niger or birdseed agar, ''C. neoformans'' produces melanin, causing the cells to become brown, while ''N. albida'' cells stay cream. Microscopically, ''N. albida'' yeasts are ovoid and when viewed with India ink, a capsule is apparent. This species also reproduces through budding. The formation of pseudohyphae has not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
