[Microbiology] Atlas of Staphylococci

Staphylococci, Atlas of Staphylococci, SUBCLINICAL ATLAS, MICROBIOLOGY ATLAS, atlas in medical, atlas in Microbiology, tuyenlab.net

Micrococcus growing on sheep blood agar showing yellow pigment.
Fig 1.  Micrococcus growing on sheep blood agar
showing yellow pigment.


Numerous gram-positive cocci in clusters, with many polymorphonuclear cells from an aspirated abscess in staphylococcal disease.
Fig 2.  Numerous gram-positive cocci in clusters, with
many polymorphonuclear cells from an aspirated abscess in
staphylococcal disease.

A, Microscopic morphology of Staphylococcus sp. on Gram stain. Gram-negative–looking cells show how older cells easily decolorize. B, Scanning electron micrograph showing the typical “clusters” of staphylococci.
Fig 3.  A, Microscopic morphology of Staphylococcus
sp. on Gram stain. Gram-negative–looking cells show how
older cells easily decolorize. B, Scanning electron micrograph
showing the typical “clusters” of staphylococci.

Fig 4.  Staphylococcus aureus growing on sheep
blood agar showing β-hemolytic, creamy, buttery-looking
colonies.

 Coagulase-negative staphylococci growing on sheep blood agar, revealing nonhemolytic, white, creamy colonies.
Fig 5.  Coagulase-negative staphylococci growing on
sheep blood agar, revealing nonhemolytic, white, creamy
colonies.

Tube coagulase test detects extracellular enzyme “free coagulase.” Top tube is coagulase positive.
Fig 6.  Tube coagulase test detects extracellular
enzyme “free coagulase.” Top tube is coagulase positive.

Novobiocin susceptibility test to differentiate coagulase-negative staphylococci isolated from urine samples.
Fig 7.  Novobiocin susceptibility test to differentiate
coagulase-negative staphylococci isolated from urine
samples. Staphylococcus saprophyticus (top) is resistant to
novobiocin, indicated by the lack of a zone of inhibition
around the disk.

Schema for the identification of staphylococcal species
Fig 8.  Schema for the identification of staphylococcal species. NOTE: Other
Staphylococcus spp. that are coagulase positive besides S. aureus include S. schleiferi and
S. lugdunensis (which can be slide-test positive), S. intermedius, and S. hyicus (tube
positive and slide positive).

Slide coagulase test (BactiStaph), a latex agglutination method commercially available for the detection of both clumping factor and protein A.
Fig 9.  Slide coagulase test (BactiStaph), a latex
agglutination method commercially available for the
detection of both clumping factor and protein A.

Fig 10.  D test positive isolate, showing flattening of
the clindamycin (CC) zone adjacent to the erythromycin (E)
disk and the characteristic D-like pattern.


This is a part of the book : Textbook of Diagnostic Microbiology 4th edition 2011 of authors: Connie R. Mahon, Donald C. Lehman and George Manuselis. If you want to view the full content of the book and support author. Please buy it here: http://amzn.to/2ctxo02

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Atlas for Medical: [Microbiology] Atlas of Staphylococci
[Microbiology] Atlas of Staphylococci
Staphylococci, Atlas of Staphylococci, SUBCLINICAL ATLAS, MICROBIOLOGY ATLAS, atlas in medical, atlas in Microbiology, tuyenlab.net
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