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    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Tooth with accumulation of bacterial plaque — Stock Photo
    Tooth with accumulation of bacterial plaque
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Culturing anaerobic bacteria — Stock Photo
    Culturing anaerobic bacteria
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai — Stock Photo
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Areolar connective tissue, light micrograph. — Stock Photo
    Areolar connective tissue, light micrograph.
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Medical illustration of intestinal villi in human intestine. — Stock Photo
    Medical illustration of intestinal villi in human intestine.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    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.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Section through the cerebellum in the brain — Stock Photo
    Section through the cerebellum in the brain
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.). — Stock Photo
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.).
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink). — Stock Photo
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink).
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue — Stock Photo
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue
    Large thrombus formation — Stock Photo
    Large thrombus formation
    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 — Stock Photo
    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
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue. — Stock Photo
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue.
    Medical artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    Medical illustration of inflamed intestinal villi. — Stock Photo
    Medical illustration of inflamed intestinal villi.
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail. — Stock Photo
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail.
    Human compact bone tissue, light micrograph. — Stock Photo
    Human compact bone tissue, light micrograph.
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen — Stock Photo
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease — Stock Photo
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease
    Illustration of human microbiome bacteria. — Stock Photo
    Illustration of human microbiome bacteria.
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    X-ray of the head and human brain in concept of neural connections and electrical pulses. — Stock Photo
    X-ray of the head and human brain in concept of neural connections and electrical pulses.
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Medical artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    Cancellous Bone tissue — Stock Photo
    Cancellous Bone tissue
    Staphylococcus epidermidis bacteria — Stock Photo
    Staphylococcus epidermidis bacteria
    X-ray of the head and human brain in concept of neural connections and electrical pulses. — Stock Photo
    X-ray of the head and human brain in concept of neural connections and electrical pulses.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Petri dish containing cultured bacteria — Stock Photo
    Petri dish containing cultured bacteria
    Legionella pneumophila bacteria — Stock Photo
    Legionella pneumophila bacteria
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Person washing hands under running water from tap. — Stock Photo
    Person washing hands under running water from tap.
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Toothbrush and green toothpaste, close-up. — Stock Photo
    Toothbrush and green toothpaste, close-up.
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Oligodendrocyte cell structure — Stock Photo
    Oligodendrocyte cell structure
    Stratified cuboidal epithelium, digital illustration. — Stock Photo
    Stratified cuboidal epithelium, digital illustration.
    Neisseria meningitidis bacteria — Stock Photo
    Neisseria meningitidis bacteria