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    Thyroid cancer cells, illustration. — Stock Photo
    Thyroid cancer cells, illustration.
    Female scientists in gloves and face mask working in laboratory — Stock Photo
    Female scientists in gloves and face mask working in laboratory
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins. — Stock Photo
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins.
    Human Coccyx, computer illustration — Stock Photo
    Human Coccyx, computer illustration
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Delicate (Mythimna vitellina) moth larva on a wild plant. — Stock Photo
    Delicate (Mythimna vitellina) moth larva on a wild plant.
    Activated platelets in blood flow, illustration. — Stock Photo
    Activated platelets in blood flow, illustration.
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Female scientist filling pipette trays at fume hood in laboratory — Stock Photo
    Female scientist filling pipette trays at fume hood in laboratory
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain. — Stock Photo
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain.
    Red and yellow barbet (Trachyphonus erythrocephalus). This barbet is found in woodland and scrubland throughout Kenya, where it builds its nests in termite mounds — Stock Photo
    Red and yellow barbet (Trachyphonus erythrocephalus). This barbet is found in woodland and scrubland throughout Kenya, where it builds its nests in termite mounds
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators — Stock Photo
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators
    Cancer cells, computer illustration — Stock Photo
    Cancer cells, computer illustration
    Female scientist in hijab filling pipette trays in laboratory — Stock Photo
    Female scientist in hijab filling pipette trays in laboratory
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Scaphoid bone, computer illustration — Stock Photo
    Scaphoid bone, computer illustration
    Proximal phalanges, computer illustration — Stock Photo
    Proximal phalanges, computer illustration
    Human eye nerve, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human eye nerve, light micrograph. Haematoxylin and eosin stain.
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration — Stock Photo
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration
    Histoplasma capsulatum fungus, illustration. Histoplasma capsulatum is a species of parasitic, yeast-like dimorphic fungus that can, if inhaled, cause a type of lung infection called histoplasmosis — Stock Photo
    Histoplasma capsulatum fungus, illustration. Histoplasma capsulatum is a species of parasitic, yeast-like dimorphic fungus that can, if inhaled, cause a type of lung infection called histoplasmosis
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green)
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Female scientist in hijab and face mask using centrifuge in laboratory — Stock Photo
    Female scientist in hijab and face mask using centrifuge in laboratory
    Female scientist using digital tablet in laboratory — Stock Photo
    Female scientist using digital tablet in laboratory
    Female scientists using laptop in laboratory — Stock Photo
    Female scientists using laptop in laboratory
    Female scientist working at fume hood in laboratory — Stock Photo
    Female scientist working at fume hood in laboratory
    Female scientist in hijab with digital tablet in laboratory — Stock Photo
    Female scientist in hijab with digital tablet in laboratory
    Halictid bee on a field scabious (Knautia arvensis) flower. — Stock Photo
    Halictid bee on a field scabious (Knautia arvensis) flower.
    Shoulder blade, computer illustration — Stock Photo
    Shoulder blade, computer illustration
    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 — Stock Photo
    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
    True dung beetle (Onthophagus fissicornis). — Stock Photo
    True dung beetle (Onthophagus fissicornis).
    Tendon fibroblast, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Tendon fibroblast, light micrograph. Haematoxylin and eosin stain.
    PRD1 bacteriophage, illustration. Molecular model of the structure of a PRD1 bacteriophage. Bacteriophages are viruses that infect bacteria — Stock Photo
    PRD1 bacteriophage, illustration. Molecular model of the structure of a PRD1 bacteriophage. Bacteriophages are viruses that infect bacteria
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Skeletal thorax, computer illustration — Stock Photo
    Skeletal thorax, computer illustration
    Tibia bone, computer illustration — Stock Photo
    Tibia bone, computer illustration
    3d illustration of a lysosome organelle within a eukaryotic cell. Lysosomes are enzyme-filled vesicles that break down waste material, foreign bodies and cellular debris. — Stock Photo
    3d illustration of a lysosome organelle within a eukaryotic cell. Lysosomes are enzyme-filled vesicles that break down waste material, foreign bodies and cellular debris.
    Shoulder joint, computer illustration — Stock Photo
    Shoulder joint, computer illustration
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Female scientist in hijab and gloves examining specimen tray — Stock Photo
    Female scientist in hijab and gloves examining specimen tray
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Human Femur, computer illustration — Stock Photo
    Human Femur, computer illustration
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells — Stock Photo
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells
    Illustration of the ultrastructure of the SARS-CoV-2 coronavirus (previously 2019-nCoV) that was first identified in Wuhan, China, in December 2019 — Stock Photo
    Illustration of the ultrastructure of the SARS-CoV-2 coronavirus (previously 2019-nCoV) that was first identified in Wuhan, China, in December 2019
    Minor beefly (Bombylius minor) on a wild flower head. — Stock Photo
    Minor beefly (Bombylius minor) on a wild flower head.
    Portrait happy female scientist with digital tablet in laboratory — Stock Photo
    Portrait happy female scientist with digital tablet in laboratory
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone — Stock Photo
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone
    Close-up of T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    Close-up of T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Lumbar spine, computer illustration — Stock Photo
    Lumbar spine, computer illustration
    Root vascular tissue, light micrograph. — Stock Photo
    Root vascular tissue, light micrograph.
    Human neck pain, computer illustration. — Stock Photo
    Human neck pain, computer illustration.
    Middle phalanges, computer illustration — Stock Photo
    Middle phalanges, computer illustration
    Portrait confident female scientist in face mask in laboratory — Stock Photo
    Portrait confident female scientist in face mask in laboratory
    Torovirus structure, illustration. Toroviruses have a doughnut-shaped structure consisting of an outer envelope (dark blue) with spike proteins (yellow) — Stock Photo
    Torovirus structure, illustration. Toroviruses have a doughnut-shaped structure consisting of an outer envelope (dark blue) with spike proteins (yellow)
    Close-up portrait of a chimpanzee (Pan troglodytes). — Stock Photo
    Close-up portrait of a chimpanzee (Pan troglodytes).
    Male scientist talking with colleagues in laboratory — Stock Photo
    Male scientist talking with colleagues in laboratory
    Light micrograph of a colon biopsy from a colonoscopy. The pathology report describes normal colonic mucosa fragment with colic glands. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of a colon biopsy from a colonoscopy. The pathology report describes normal colonic mucosa fragment with colic glands. Haematoxylin and eosin stain.
    Female scientist putting on protective hair net in laboratory — Stock Photo
    Female scientist putting on protective hair net in laboratory