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    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Nerve cells and axon structures — Stock Photo
    Nerve cells and axon structures
    Tongue surface showing papillae — Stock Photo
    Tongue surface showing papillae
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Scientist viewing bacteria cultures — Stock Photo
    Scientist viewing bacteria cultures
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Arteries of cardiovascular system and skeletal structure — Stock Photo
    Arteries of cardiovascular system and skeletal structure
    Arm bones and pelvic bones — Stock Photo
    Arm bones and pelvic bones
    Dual chamber pacemaker — Stock Photo
    Dual chamber pacemaker
    Metaphase chromosome structure — Stock Photo
    Metaphase chromosome structure
    Dental floss with cheek cells — Stock Photo
    Dental floss with cheek cells
    Structural anatomy of normal shoulder — Stock Photo
    Structural anatomy of normal shoulder
    Adult male anatomy — Stock Photo
    Adult male anatomy
    Kidneys and adrenal glands — Stock Photo
    Kidneys and adrenal glands
    Surface of the human tongue, computer illustration. — Stock Photo
    Surface of the human tongue, computer illustration.
    Human structural anatomy — Stock Photo
    Human structural anatomy
    Human fetus age 19 weeks — Stock Photo
    Human fetus age 19 weeks
    Human leg and Knee bones — Stock Photo
    Human leg and Knee bones
    X-ray of skull of adult male — Stock Photo
    X-ray of skull of adult male
    16-cell morula embryo — Stock Photo
    16-cell morula embryo
    Human brain with network of blood vessels — Stock Photo
    Human brain with network of blood vessels
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Structural anatomy of adult human — Stock Photo
    Structural anatomy of adult human
    Human hip bone structure — Stock Photo
    Human hip bone structure
    Central nervous system — Stock Photo
    Central nervous system
    Kidneys in male body — Stock Photo
    Kidneys in male body
    Severe osteoarthritis of ankle — Stock Photo
    Severe osteoarthritis of ankle
    Syphilis bacteria shape and structure — Stock Photo
    Syphilis bacteria shape and structure
    Head anatomy revealing brain structure — Stock Photo
    Head anatomy revealing brain structure
    HIV particles in the bloodstream — Stock Photo
    HIV particles in the bloodstream
    Chromosomes with four-arm structure — Stock Photo
    Chromosomes with four-arm structure
    Structural anatomy of adult human — Stock Photo
    Structural anatomy of adult human
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Structural anatomy of adult human — Stock Photo
    Structural anatomy of adult human
    Structural anatomy of human pelvis — Stock Photo
    Structural anatomy of human pelvis
    Organs of reproductive system — Stock Photo
    Organs of reproductive system
    Human shoulder joint — Stock Photo
    Human shoulder joint
    Adipocyte fat cell — Stock Photo
    Adipocyte fat cell
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Rod-shaped bacteria — Stock Photo
    Rod-shaped bacteria
    Kidneys pain localization — Stock Photo
    Kidneys pain localization
    Longitudinal section of a human sciatic l nerve — Stock Photo
    Longitudinal section of a human sciatic l nerve
    Intestinal lining anatomy — Stock Photo
    Intestinal lining anatomy
    Human teeth being cleaned — Stock Photo
    Human teeth being cleaned
    Rod-shaped bacterial strands — Stock Photo
    Rod-shaped bacterial strands
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Spinal cord anatomy — Stock Photo
    Spinal cord anatomy
    Human skeletal system — Stock Photo
    Human skeletal system
    Structural anatomy of hip joint — Stock Photo
    Structural anatomy of hip joint
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Human hand bones structure — Stock Photo
    Human hand bones structure
    Visual rendering of Animal cells — Stock Photo
    Visual rendering of Animal cells
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Human skeletal system — Stock Photo
    Human skeletal system
    Leg and foot bones — Stock Photo
    Leg and foot bones
    Structure of animal cell — Stock Photo
    Structure of animal cell
    Nerve cells affected by alzheimers — Stock Photo
    Nerve cells affected by alzheimers
    Human leg structural anatomy — Stock Photo
    Human leg structural anatomy