Based on PIGMENT production & VIRULENCE, Staphylococci is divided into 3 important species
- S.aureus: Forms golden yellow pigment
- S.albus: Forms white pigment
- S.citreus: Forms lemon yellow pigment
S aureus 
S albus
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Based on coagulase production
- Coagulase positive : Staphylococcus aureus
- Coagulase negative: Staphylococcus epidermitidis
MDS / MD ENTRANCE QUESTIONS
1.Which among the following is example for coagulase negative Staphylococcus ?
A. S epidermitidis
B. S aureus
C. Both A and B
D. None of the above
2. Skin infections are more commonly caused by ?
A. Staphylococcus aureus
B. Staphylococcus epidermitidis
C. Both A and B
D. None of the above
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1.A 2.A