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1841 results

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    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Human immunodeficiency virus structure — Stock Photo
    Human immunodeficiency virus structure
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Nerve cells and intercellular junctions — Stock Photo
    Nerve cells and intercellular junctions
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    Structure and shape of basophil — Stock Photo
    Structure and shape of basophil
    Nerve cell structure on plain background — Stock Photo
    Nerve cell structure on plain background
    HIV viruses infecting T-lymphocyte cell — Stock Photo
    HIV viruses infecting T-lymphocyte cell
    Amyloid plaques amongst neurons — Stock Photo
    Amyloid plaques amongst neurons
    Amyloid plaques amongst neurons — Stock Photo
    Amyloid plaques amongst neurons
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Immunodeficiency virus infection in blood stream — Stock Photo
    Immunodeficiency virus infection in blood stream
    Dividing bacteria on tissue surface — Stock Photo
    Dividing bacteria on tissue surface
    Red blood cells — Stock Photo
    Red blood cells
    Marsh marigold carpel — Stock Photo
    Marsh marigold carpel
    Structure of eosinophil blood cell — Stock Photo
    Structure of eosinophil blood cell
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Destruction of cancer cell — Stock Photo
    Destruction of cancer cell
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Enterococcus bacteria colony — Stock Photo
    Enterococcus bacteria colony
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Cancerous white blood cell in leukaemia — Stock Photo
    Cancerous white blood cell in leukaemia
    Sperm cell, or spermatozoa — Stock Photo
    Sperm cell, or spermatozoa
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Red blood cells flowing inside an artery — Stock Photo
    Red blood cells flowing inside an artery
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Cancer cells and white blood cells — Stock Photo
    Cancer cells and white blood cells
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Red blood cells — Stock Photo
    Red blood cells
    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red blood cells
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Healthy red blood cells — Stock Photo
    Healthy red blood cells
    Brain and nerve cells — Stock Photo
    Brain and nerve cells
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    HIV viruses infecting T-lymphocyte cell — Stock Photo
    HIV viruses infecting T-lymphocyte cell
    White blood cell structure — Stock Photo
    White blood cell structure
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Cardiac muscle cells — Stock Photo
    Cardiac muscle cells
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Helicobacter pylori bacteria — Stock Photo
    Helicobacter pylori bacteria
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Escherichia coli bacteria on gecko tongue — Stock Photo
    Escherichia coli bacteria on gecko tongue
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Enteroviruses and neuron — Stock Photo
    Enteroviruses and neuron
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Sickle cell anaemia — Stock Photo
    Sickle cell anaemia
    Dust mite on skin surface — Stock Photo
    Dust mite on skin surface
    Nerve cells and intercellular junctions — Stock Photo
    Nerve cells and intercellular junctions
    Cells undergoing mitosis — Stock Photo
    Cells undergoing mitosis
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Common house dust mite — Stock Photo
    Common house dust mite
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Red blood cells in sickle cell anaemia — Stock Photo
    Red blood cells in sickle cell anaemia