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    Puffball fungus spores — Stock Photo
    Puffball fungus spores
    Coloured scanning electron micrograph of cancer cell from human colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cell from human colon.
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cells, coloured scanning electron micrograph.
    House dust mites — Stock Photo
    House dust mites
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Shell of a radiolarian — Stock Photo
    Shell of a radiolarian
    Soil bacteria, coloured scanning electron micrograph. — Stock Photo
    Soil bacteria, coloured scanning electron micrograph.
    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
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    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.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph. — Stock Photo
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Dog tapeworm head — Stock Photo
    Dog tapeworm head
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Dead bluebottle fly — Stock Photo
    Dead bluebottle fly
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock Photo
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells
    Salt water pennate diatom frustule — Stock Photo
    Salt water pennate diatom frustule
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae. — Stock Photo
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae.
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Zebrafish young. Coloured scanning electron micrograph (SEM) of newly-hatched zebrafish (Danio rerio) young or fry. These fish are used to study embryonic development. The eyes (blue) are seen in the heads. Zebrafish eggs are transparent — Stock Photo
    Zebrafish young. Coloured scanning electron micrograph (SEM) of newly-hatched zebrafish (Danio rerio) young or fry. These fish are used to study embryonic development. The eyes (blue) are seen in the heads. Zebrafish eggs are transparent
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    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.
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Human red blood cells — Stock Photo
    Human red blood cells
    Scanning electron micrograph of PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph of PC12 neurone in culture.
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone. — Stock Photo
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone.
    Activated platelet from peripheral blood — Stock Photo
    Activated platelet from peripheral blood
    Coxsackie viruse particles. — Stock Photo
    Coxsackie viruse particles.
    Sarcoptic mange mites eggs — Stock Photo
    Sarcoptic mange mites eggs
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Neutrophil cells. Coloured transmission electron micrograph (TEM) of human neutrophil cells. Neutrophils are involved in inflammatory responses to tissue damage, where they engulf and destroy microorganisms — Stock Photo
    Neutrophil cells. Coloured transmission electron micrograph (TEM) of human neutrophil cells. Neutrophils are involved in inflammatory responses to tissue damage, where they engulf and destroy microorganisms
    Human hair, coloured scanning electron micrograph (SEM). Magnification: x550 when printed at 10 centimetres wide. — Stock Photo
    Human hair, coloured scanning electron micrograph (SEM). Magnification: x550 when printed at 10 centimetres wide.
    Male sex cell — Stock Photo
    Male sex cell
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Coloured scanning electron micrograph of bacteria from culture of breast milk. — Stock Photo
    Coloured scanning electron micrograph of bacteria from culture of breast milk.
    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.
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    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
    Colored scanning electron micrograph of scales from silverfish insect living fossil. — Stock Photo
    Colored scanning electron micrograph of scales from silverfish insect living fossil.
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells. — Stock Photo
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells.
    Activated blood cell fragments platelets, coloured scanning electron micrograph. — Stock Photo
    Activated blood cell fragments platelets, coloured scanning electron micrograph.
    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
    Zika virus particles — Stock Photo
    Zika virus particles