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11864306 results

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    Giant Polytene chromosomes — Stock Photo
    Giant Polytene chromosomes
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Syphilis ulcer on penis — Stock Photo
    Syphilis ulcer on penis
    Lower arm bone structure and functional anatomy — Stock Photo
    Lower arm bone structure and functional anatomy
    Intestinal lining anatomy — Stock Photo
    Intestinal lining anatomy
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Human muscular structure — Stock Photo
    Human muscular structure
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Human scapula anatomy — Stock Photo
    Human scapula anatomy
    Normal human anatomy — Stock Photo
    Normal human anatomy
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Structure of alveoli of human lungs — Stock Photo
    Structure of alveoli of human lungs
    Trichina spiralis roundworm — Stock Photo
    Trichina spiralis roundworm
    58-cell blastocyst embryo — Stock Photo
    58-cell blastocyst embryo
    Human vertebral structure, illustration — Stock Photo
    Human vertebral structure, illustration
    Normal human chromosomes — Stock Photo
    Normal human chromosomes
    Cardiovascular system of healthy adult — Stock Photo
    Cardiovascular system of healthy adult
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Human larynx anatomy — Stock Photo
    Human larynx anatomy
    Adipose tissue composed of adipocytes — Stock Photo
    Adipose tissue composed of adipocytes
    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Skeletal system of adult female — Stock Photo
    Skeletal system of adult female
    Fertilization showing sperm fertilizing an egg — Stock Photo
    Fertilization showing sperm fertilizing an egg
    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).
    Upper-body and skull skeletal system — Stock Photo
    Upper-body and skull skeletal system
    Tongue surface showing papillae — Stock Photo
    Tongue surface showing papillae
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Rheumatoid arthritis of hands — Stock Photo
    Rheumatoid arthritis of hands
    Adult male anatomy — Stock Photo
    Adult male anatomy
    Lower arm bone structure and functional anatomy — Stock Photo
    Lower arm bone structure and functional anatomy
    Muscular system of pelvic region — Stock Photo
    Muscular system of pelvic region
    Trachea lined with ciliated columnar epithelium — Stock Photo
    Trachea lined with ciliated columnar epithelium
    Schematic representation of human vein structure — Stock Photo
    Schematic representation of human vein structure
    Healthy human teeth — Stock Photo
    Healthy human teeth
    Healthy bone structure — Stock Photo
    Healthy bone structure
    Human atlas bone — Stock Photo
    Human atlas bone
    Structure of alveoli of human lungs — Stock Photo
    Structure of alveoli of human lungs
    Internal organs and digestive system — Stock Photo
    Internal organs and digestive system
    Healthy extended cervical spine — Stock Photo
    Healthy extended cervical spine
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    Elbow joint anatomy — Stock Photo
    Elbow joint anatomy
    Nerve cells and axon connections — Stock Photo
    Nerve cells and axon connections
    Human structural anatomy — Stock Photo
    Human structural anatomy
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Healthy ankle joint — Stock Photo
    Healthy ankle joint
    Head anatomy revealing normal brain — Stock Photo
    Head anatomy revealing normal brain
    Adult male skeleton — Stock Photo
    Adult male skeleton
    Tongue surface showing papillae — Stock Photo
    Tongue surface showing papillae
    HIV particles in the bloodstream — Stock Photo
    HIV particles in the bloodstream
    Nervous system and brain — Stock Photo
    Nervous system and brain
    Pregnant woman and 6 week embryo — Stock Photo
    Pregnant woman and 6 week embryo
    Intestinal villi projections — Stock Photo
    Intestinal villi projections
    Red blood cells in bloodstream — Stock Photo
    Red blood cells in bloodstream
    Human skeletal structure — Stock Photo
    Human skeletal structure
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Alveoli structure and blood supply — Stock Photo
    Alveoli structure and blood supply
    Human thorax anatomy — Stock Photo
    Human thorax anatomy
    Sperm fertilizing an egg cell — Stock Photo
    Sperm fertilizing an egg cell
    Internal organs and digestive system — Stock Photo
    Internal organs and digestive system
    Four-cell embryo — Stock Photo
    Four-cell embryo