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2461 results

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    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Immune response to cancer — Stock Photo
    Immune response to cancer
    Virus particles spreading through blood stream — Stock Photo
    Virus particles spreading through blood stream
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Malignant tumor in a woman breast — Stock Photo
    Malignant tumor in a woman breast
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Coloured X-ray of arthritic knees — Stock Photo
    Coloured X-ray of arthritic knees
    Adult parasitic tick — Stock Photo
    Adult parasitic tick
    Bacterial infection spreading in bloodstream — Stock Photo
    Bacterial infection spreading in bloodstream
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    HIV particles in the bloodstream — Stock Photo
    HIV particles in the bloodstream
    Cancer cell characteristic — Stock Photo
    Cancer cell characteristic
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Cancerous tumour in the colon — Stock Photo
    Cancerous tumour in the colon
    Adult parasitic tick — Stock Photo
    Adult parasitic tick
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Parasitic Bedbug on human skin — Stock Photo
    Parasitic Bedbug on human skin
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Human papillomavirus particles in the bloodstream — Stock Photo
    Human papillomavirus particles in the bloodstream
    Human teeth and sign of dental erosion — Stock Photo
    Human teeth and sign of dental erosion
    AIDS virus particle — Stock Photo
    AIDS virus particle
    Large intestine showing diverticulitis — Stock Photo
    Large intestine showing diverticulitis
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Human papilloma virus — Stock Photo
    Human papilloma virus
    Visual render of Human rhinovirus 14 — Stock Photo
    Visual render of Human rhinovirus 14
    Normal large intestine — Stock Photo
    Normal large intestine
    Virus particles spreading through blood stream — Stock Photo
    Virus particles spreading through blood stream
    Normal human brain — Stock Photo
    Normal human brain
    Human papillomavirus particles in the bloodstream — Stock Photo
    Human papillomavirus particles in the bloodstream
    Human papillomavirus particles in the bloodstream — Stock Photo
    Human papillomavirus particles in the bloodstream
    Head louse on human hair — Stock Photo
    Head louse on human hair
    Human papilloma virus — Stock Photo
    Human papilloma virus
    Human immunodeficiency virus structure — Stock Photo
    Human immunodeficiency virus structure
    Immunodeficiency virus infection in blood stream — Stock Photo
    Immunodeficiency virus infection in blood stream
    Parasitic tick biting skin — Stock Photo
    Parasitic tick biting skin
    Stomach cancerous tumor — Stock Photo
    Stomach cancerous tumor
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Tick biting skin — Stock Photo
    Tick biting skin
    Bacterial infection in the blood stream — Stock Photo
    Bacterial infection in the blood stream
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Coloured X-ray of arthritic knees — Stock Photo
    Coloured X-ray of arthritic knees
    Visual render of SARS virus — Stock Photo
    Visual render of SARS virus
    Coloured X-ray of arthritic knees — Stock Photo
    Coloured X-ray of arthritic knees
    View of Pituitary tumor — Stock Photo
    View of Pituitary tumor
    Plague bacteria illustration — Stock Photo
    Plague bacteria illustration
    Yellow fever virus — Stock Photo
    Yellow fever virus
    Visual render of Caulobacter bacteriophage — Stock Photo
    Visual render of Caulobacter bacteriophage
    Sickle cell anaemia — Stock Photo
    Sickle cell anaemia
    Human head louse on human hair — Stock Photo
    Human head louse on human hair
    Yellow fever virus — Stock Photo
    Yellow fever virus
    Virus particles spreading through blood stream — Stock Photo
    Virus particles spreading through blood stream
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Parasitic tick biting skin — Stock Photo
    Parasitic tick biting skin
    Visual render of Adenovirus — Stock Photo
    Visual render of Adenovirus
    Visual render of Mimi virus — Stock Photo
    Visual render of Mimi virus
    Red blood cells in sickle cell anaemia — Stock Photo
    Red blood cells in sickle cell anaemia
    Malignant tumor in a woman breast — Stock Photo
    Malignant tumor in a woman breast
    Polio virus particles in the bloodstream — Stock Photo
    Polio virus particles in the bloodstream