BACKGROUND The intra- and inter-species genetic diversity of bacteria and the absence of 'reference', or the most representative, sequences of individual species present a significant challenge for sequence-based identification. The aims of this study were to determine the utility, and compare the performance of several clustering and classification algorithms to identify the species of 364 seq...

during 2 years, from march 1987 to april 1989, 600 samples of soil and plant were collected from different cities of northern provinces of iran. out of the six hundred samples 58 actinomycetes, 9 pseudallescheria boydii, 10 sporothrix schenckii, and 4 sporothrix schenckii-like fungi were isolated as the following: streptomyces griseus from 31 samples (38.27%), nocardia asteroides from 8 samples...

central nervous system ranks among the favorite sites to get involved by nocardia astroides. this opportunistic organism complicates many disorders characterized by cellular or humoral immunity disturbances.a 36-year-old woman is being presented, known to have systemic lupus erythematosus (sle) and having received a two year course of corticosteroid treatment. cerebellar abscess was found on di...

Bacterial mycetoma is a neglected disease mainly observed in tropical area countries and typically associated with rural conditions, making its presence in developed countries of temperate climate areas rare. However, we report the first case of an autochthonous mycetoma case in continental France that originated from a new Nocardia species. A Gram-positive filamentous bacterium (OFN 14.177T) w...

During 2 years, from March 1987 to April 1989, 600 samples of soil and plant were collected from different cities of northern provinces of Iran. Out of the six hundred samples 58 Actinomycetes, 9 Pseudallescheria boydii, 10 Sporothrix schenckii, and 4 Sporothrix schenckii-like fungi were isolated as the following: Streptomyces griseus from 31 samples (38.27%), Nocardia asteroides from 8 sa...

Nocardia are gram-positive and partially acid-fast bacteria with saprophytic lives in the environment. These groups of bacteria are able to enter the human body through traumatic inhalation and may consequently cause Nocardiosis infections. Case Presentation: A 32-year-old man was referred to Al-Zahra Hospital with symptoms such as fever, gradual weight loss, and persistent coughing. First, th...

Adams, James N. (University of South Dakota, Vermillion). Recombination between Nocardia erythropolis and Nocardia canicruria. J. Bacteriol. 88:865-876. 1964.-Nutritionally complementary auxotrophic mutants derived from Nocardia erythropolis did not yield prototrophic recombinants when progeny from mixed cultures or newly mixed strains were inoculated onto minimal medium. Similarly, complementa...