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    Agar plates with growing fungus colony on laboratory table. — Stock Photo
    Agar plates with growing fungus colony on laboratory table.
    Illustration of giardia parasites on blue background. — Stock Photo
    Illustration of giardia parasites on blue background.
    Digital illustration of female reproductive system and Chlamydia trachomatis bacteria causing Chlamydial infection. — Stock Photo
    Digital illustration of female reproductive system and Chlamydia trachomatis bacteria causing Chlamydial infection.
    Human smooth muscle, light micrograph — Stock Photo
    Human smooth muscle, light micrograph
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    Magnified digital illustration of Candida albicans yeast. — Stock Photo
    Magnified digital illustration of Candida albicans yeast.
    3d illustration of blue cells pattern with yellow nuclei. — Stock Photo
    3d illustration of blue cells pattern with yellow nuclei.
    Animal cells with mitochondria, digital illustration. — Stock Photo
    Animal cells with mitochondria, digital illustration.
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Cancer cell being attacked by leukocytes, computer illustration — Stock Photo
    Cancer cell being attacked by leukocytes, computer illustration
    Human tendon, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human tendon, light micrograph. Haematoxylin and eosin stain.
    Human digestive system microbiota, 3d illustration. — Stock Photo
    Human digestive system microbiota, 3d illustration.
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    Human embryo with four cells — Stock Photo
    Human embryo with four cells
    Medical illustration of bacteria in human intestine. — Stock Photo
    Medical illustration of bacteria in human intestine.
    Protein molecules, 3d illustration — Stock Photo
    Protein molecules, 3d illustration
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Macrophage (purple) and cancer cells (red), illustration. — Stock Photo
    Macrophage (purple) and cancer cells (red), illustration.
    Light micrograph of a cross sections of monocot stem. — Stock Photo
    Light micrograph of a cross sections of monocot stem.
    Hippocampus neurons structure, digital artwork. — Stock Photo
    Hippocampus neurons structure, digital artwork.
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light — Stock Photo
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light
    Illustration of human nervous receptors on black background. — Stock Photo
    Illustration of human nervous receptors on black background.
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus — Stock Photo
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus
    Round Coxsackievirus particles, digital illustration. — Stock Photo
    Round Coxsackievirus particles, digital illustration.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Soil bacteria, coloured scanning electron micrograph. — Stock Photo
    Soil bacteria, coloured scanning electron micrograph.
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    3d illustration of virus and bacteria entering human skin. — Stock Photo
    3d illustration of virus and bacteria entering human skin.
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.
    3d illustration of aligned cells with red cell in middle. — Stock Photo
    3d illustration of aligned cells with red cell in middle.
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Dental floss with cheek cells — Stock Photo
    Dental floss with cheek cells
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Neural network showing synaptic terminals — Stock Photo
    Neural network showing synaptic terminals
    Antibiotic resistant Pseudomonas aeruginosa rod-shaped bacteria, digital 3d illustration. — Stock Photo
    Antibiotic resistant Pseudomonas aeruginosa rod-shaped bacteria, digital 3d illustration.
    Digital illustration of abnormal blood cells infected by hairy cell leukemia. — Stock Photo
    Digital illustration of abnormal blood cells infected by hairy cell leukemia.
    3d illustration of white blood cells leukocytes in human body. — Stock Photo
    3d illustration of white blood cells leukocytes in human body.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Human ovary structure — Stock Photo
    Human ovary structure
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Digital illustration of cancerous tumor in lungs and close-up of lung cancer cells. — Stock Photo
    Digital illustration of cancerous tumor in lungs and close-up of lung cancer cells.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Adipose tissue composed of adipocytes — Stock Photo
    Adipose tissue composed of adipocytes
    Illustration of an adenovirus particle in a clathrin-coated vesicle, the means by which it enters a human cell — Stock Photo
    Illustration of an adenovirus particle in a clathrin-coated vesicle, the means by which it enters a human cell
    Used surgical swab — Stock Photo
    Used surgical swab
    Abstract cancer cells, digital illustration. — Stock Photo
    Abstract cancer cells, digital illustration.
    3d illustration of red blood cells disintegrating. — Stock Photo
    3d illustration of red blood cells disintegrating.
    Dividing prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Dividing prostate cancer cells, coloured scanning electron micrograph.
    Streptococcus pneumoniae bacteria, digital illustration. — Stock Photo
    Streptococcus pneumoniae bacteria, digital illustration.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.