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Buccal smear showing desquamated squamous cells of the oral mucosae. Small bluish points located mainly on the right cell are bacteria. Light micrograph. HE stain.
Gram stain of the bacterium, Staphylococcus aureus. This bacteria is gram positive, as such it appears purple after staining due to the thick peptidoglycan. The round cells are also seen in clusters.
Woman, scientist and microscope in lab with research for medical development, virus or bacteria. Person, equipment and clinical study for vaccine with sample, dna and review for pharmaceutical trial
Probiotic bacteria, Lactobacillus , 3d illustration.
Hands hold anatomical model of human intestines with floating probiotics and bacteria in background. Activity: Digestive health, microbiome research, medical education.

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