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seb enterotoxin B

Publié le 16 Septembre 2012

seb enterotoxin B containing 90% and 10% of the teichoic acid. Mesh structure of peptidoglycan than gram-negative bacteria dense, after the attachment of the crystal violet staining showing purple alcohol decolorization therefore, on the contrary, negative bacteria cell wall structure, so purple alcohol wash away and then attached to the yellow sand red. Staphylococcus aureus and penicillin found very origins. Fleming is in his petri dish of Staphylococcus aureus found some cocci were killed, and then discovered penicillin. The study also showed that penicillin apparent only as the representative of Gram-positive bacteria Staphylococcus aureus. This is caused by the thickness and structure of the peptidoglycan layer. Emerging methicillin-resistant Staphylococcus aureus, known as super bacteria resistant to almost human drug, to vancomycin can deal with it. Typical Staphylococcus aureus is a spherical, about the diameter of 0.8μm, arranged in a bunch of grapes like under the microscope. Microscopic images

Staphylococcus aureus Bacillus flagella, the majority of non-encapsulated, Gram stain positive. Staphylococcus aureus nutrition ask for much, grow well in normal medium, aerobic or facultative anaerobic, optimum growth temperature of 37 ° C, the optimal growth pH 7.4, and can survive for several weeks in a dry environment. Colony thick plate, shiny, round bumps, diameter of 1 ~~ mm. Around the blood agar colony formation hemolytic transparent.

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