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    Cardiac muscle from a healthy heart — Stock Photo
    Cardiac muscle from a healthy heart
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Normal human brain — Stock Photo
    Normal human brain
    Activated blood cell fragments platelets, coloured scanning electron micrograph. — Stock Photo
    Activated blood cell fragments platelets, coloured scanning electron micrograph.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Normal human brain — Stock Photo
    Normal human brain
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli — Stock Photo
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia. — Stock Photo
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia. — Stock Photo
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.
    Allergenic pet dander on dog hair, colored scanning electron micrograph. — Stock Photo
    Allergenic pet dander on dog hair, colored scanning electron micrograph.
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species — Stock Photo
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse. — Stock Photo
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse.
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer. — Stock Photo
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Hand of a patient with osteoarthritis — Stock Photo
    Hand of a patient with osteoarthritis
    Lungs with Legionnaires disease and close-up of Legionella pneumophila bacteria, conceptual illustration. — Stock Photo
    Lungs with Legionnaires disease and close-up of Legionella pneumophila bacteria, conceptual illustration.
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Skull with an extradural haematoma — Stock Photo
    Skull with an extradural haematoma
    Person smoking, coloured X-ray. — Stock Photo
    Person smoking, coloured X-ray.
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli — Stock Photo
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    X-ray showing a fractured tibia — Stock Photo
    X-ray showing a fractured tibia
    Sperm cells in seminiferous tubule — Stock Photo
    Sperm cells in seminiferous tubule
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer. — Stock Photo
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.
    Coloured frontal X-ray of an artificial knee joint (white). — Stock Photo
    Coloured frontal X-ray of an artificial knee joint (white).
    Fallopian tube, TEM — Stock Photo
    Fallopian tube, TEM
    Copepod, coloured scanning electron micrograph (SEM). — Stock Photo
    Copepod, coloured scanning electron micrograph (SEM).
    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
    Sperm cell in a fallopian tube — Stock Photo
    Sperm cell in a fallopian tube
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae. — Stock Photo
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae.
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Coloured scanning electron micrograph of bacteria on surface of human tongue. — Stock Photo
    Coloured scanning electron micrograph of bacteria on surface of human tongue.
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system — Stock Photo
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Briefcase with various items, X-ray. — Stock Photo
    Briefcase with various items, X-ray.
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Normal ankle joint, coloured frontal X-ray. — Stock Photo
    Normal ankle joint, coloured frontal X-ray.
    Components of house dust — Stock Photo
    Components of house dust
    Coloured 3D computed tomography (CT) scan of the healthy lungs of a 30 year old patient. — Stock Photo
    Coloured 3D computed tomography (CT) scan of the healthy lungs of a 30 year old patient.
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres. — Stock Photo
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres.
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan