Gram-Positive Cocci in Singles, Pairs, and Clusters: Microscopic Features of Staphylococcus hominis

Staphylococcus hominis shows Gram-positive cocci under the microscope, typically in clusters, pairs, or singles. These bacteria are often arranged in irregular clusters, resembling bunches of grapes. Occasionally, they may appear in pairs or as single cocci, though clusters are the most common arrangement.
The Gram-positive staining highlights their thick peptidoglycan cell wall, which retains the crystal violet stain, resulting in a violet or purple appearance. This arrangement helps in differentiating S. hominis from other staphylococci and cocci. The distinct cluster formation is crucial for identifying S. hominis and assessing its role in infections, particularly in the context of skin flora and opportunistic infections.
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