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Roquefort cheese and digital illustration of fungus Penicillium roqueforti.

Coloured scanning electron micrograph of ovarian cancer cells.

Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background.

Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium

Dividing prostate gland cancer cells, colored scanning electron micrograph.

Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats

Alveolar macrophage phagocytosis of E. coli

Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs

Coloured scanning electron micrograph of ovarian cancer cells.

Conductive vessel element in mountain mahogany wood (Cercocarpus sp), coloured scanning electron micrograph (SEM).

$Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food — Stock Photo$

Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food

Colored scanning electron micrograph of immature pig sperm from epididymis.

Nasturtium leaf. Coloured scanning electron micrograph (SEM) of the underside of a nasturtium leaf (Tropaeolum sp.). Numerous hairs (trichomes) cover the surface

$Pinned fractured hip — Stock Photo$

Pinned fractured hip

Colored scanning electron micrograph of osteoblast osteocyte bone cell.

Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.

$Coloured scanning electron micrograph (SEM) of a freeze fracture of the vagina showing the stratified squamous epithelium and the underlying lamina propria — Stock Photo$

Coloured scanning electron micrograph (SEM) of a freeze fracture of the vagina showing the stratified squamous epithelium and the underlying lamina propria

Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.

Degenerative foot deformation

Methicillin-resistant Staphylococcus aureus

Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM).

Scanning electron micrograph of dermestid beetle head.

Coloured scanning electron micrograph of macrophage white blood cell.

Colored computed tomography scan of section through brain of senior male patient with dementia.

Candida albicans infected medical catheter

Colored scanning electron micrograph of Liposcelis divinatorius booklouse.

Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles.

Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.

$Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink). — Stock Photo$

Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink).

Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.

Total hip replacement,

Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease.

Coloured scanning electron micrograph of activated platelets attached to surgical gauze.

Colored scanning electron micrograph of osteosarcoma bone cancer cell.

Colored scanning electron micrograph of starch grains in seed of legume.

Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.

Green colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.

Colored computed tomography scan of section through brain of senior male patient with dementia.

White blood cell

Roquefort cheese and digital illustration of fungus Penicillium roqueforti.

Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.

Coloured scanning electron micrograph of human cancellous spongy bone tissue.

$Intestinal lining. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( yellow) is exposed to food — Stock Photo$

Intestinal lining. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( yellow) is exposed to food