Staphylococcal pathogens of chronic relapsing infections, such as cystic pneumosclerosis and osteomyelitis are characterized by atypical morphology of the colonies (atypical variants of staphylococci) and present a subpopulation in clinically significant staphylococci. Since the loss of some phenotypic characteristics important for the genus Staphylococcus due to mutations, identification of such staphylococcal variants is difficult and sometimes impossible. An algorithm of identification of atypical variants of S.
View Article and Find Full Text PDFSmall-colony variants (SCVs), isolated from a population of the parental strains of Staphylococcus aureus, S. haemolyticus and S. epidermidis lost a number of features typical of the species and genus and were characterized by delayed growth, altered colony morphology, lack of pigmentation and changed carbohydrate consumption.
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