Цены ВОЙТИ РЕГИСТРАЦИЯ

Категории: Все - bacteria

по zulaikha hashim 14 лет назад

811

STAPHYLOCOCCUS

Staphylococcus aureus is a Gram-positive bacterium that typically forms clusters resembling grapes. It is a facultative anaerobe, meaning it can grow without oxygen, and thrives in simple nutrient media.

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STAPHYLOCOCCUS AUREUS

no sabe ni hacer ningu mapa le falta mucho pa q me iguale

Cultural Characters

facultative anaerobe

usually grows in simple nutrient media

selective indicator mannitol

can tolerate high conc. of NaCl

ferments mannitol

blood agar : golden yellow

beta haemolysi (complete)

Tema principal

le falta

Virulence Factor & Pathogenesis

exotoxins

haemolysin

protein A

combines with non-specifically with Fc-portion of IgG

inhibit opsonization

invasins

leucocidin-acts on PMN & macrocyte

staphylokinase & hyaluronidase-dessiminase

clumping factor

fibrogen-binding protein

important adhesin

leads to traumatized tissue and blood clot

staphylocoagulase

extracellular pt (fibronogen>fibrin)

fibrin-for protection from immunology

-localization of disease

Marphology

opaque,pigmented colonies

catalase +ve

arranged in cluster (grape-like)

spherical cocci

gram +ve