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    Dendritic cell, computer illustration. A dendritic cell is a type of white blood cell. It is an antigen-presenting cell (APC), which presents antigens to T lymphocytes. — Stock Photo
    Dendritic cell, computer illustration. A dendritic cell is a type of white blood cell. It is an antigen-presenting cell (APC), which presents antigens to T lymphocytes.
    Herpes simplex viruses, computer illustration — Stock Photo
    Herpes simplex viruses, computer illustration
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Illustration of transparent cells with splitting nucleus, cell membrane and visible chromosomes. — Stock Photo
    Illustration of transparent cells with splitting nucleus, cell membrane and visible chromosomes.
    Illustration of small intestine in human body silhouette. — Stock Photo
    Illustration of small intestine in human body silhouette.
    Hepatitis E virus red particles with protein coat. — Stock Photo
    Hepatitis E virus red particles with protein coat.
    Pollen grains of mimosa flowers, digital illustration. — Stock Photo
    Pollen grains of mimosa flowers, digital illustration.
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis — Stock Photo
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    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.
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis. — Stock Photo
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis.
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Plasmodium malariae protozoan parasite, digital illustration. — Stock Photo
    Plasmodium malariae protozoan parasite, digital illustration.
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Illustration of adrenal gland and molecular model of steroid hormone Aldosterone. — Stock Photo
    Illustration of adrenal gland and molecular model of steroid hormone Aldosterone.
    Rod-shaped bacterial organisms — Stock Photo
    Rod-shaped bacterial organisms
    CRISPR-Cas9 gene editing complex in DNA and cells, conceptual illustration. — Stock Photo
    CRISPR-Cas9 gene editing complex in DNA and cells, conceptual illustration.
    Microbiologist working with petri dish and test tubes in laboratory. — Stock Photo
    Microbiologist working with petri dish and test tubes in laboratory.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Artwork of human digestive system and close-up of bacteria in small intestine. — Stock Photo
    Artwork of human digestive system and close-up of bacteria in small intestine.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    Digital illustration showing inclusion composed of chlamydia reticulate bodies near nucleus of cell. — Stock Photo
    Digital illustration showing inclusion composed of chlamydia reticulate bodies near nucleus of cell.
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center) — Stock Photo
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center)
    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Green grass growing in plastic cups on laboratory table with microscope for agriculture research. — Stock Photo
    Green grass growing in plastic cups on laboratory table with microscope for agriculture research.
    Female laboratory assistant using equipment. — Stock Photo
    Female laboratory assistant using equipment.
    Abstract measles virus particle on white background, digital cutout illustration. — Stock Photo
    Abstract measles virus particle on white background, digital cutout illustration.
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Close-up of hand using multipipette for placing DNA onto agarose gel. — Stock Photo
    Close-up of hand using multipipette for placing DNA onto agarose gel.
    Human heart, computer illustration — Stock Photo
    Human heart, computer illustration
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Green colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine. — Stock Photo
    Green colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Rat bite fever bacteria, computer illustration — Stock Photo
    Rat bite fever bacteria, computer illustration
    Digital illustration of cutaway view of human cell membrane. — Stock Photo
    Digital illustration of cutaway view of human cell membrane.
    Male laboratory assistant wearing glasses. — Stock Photo
    Male laboratory assistant wearing glasses.
    Mucor fungus on black background, digital illustration. — Stock Photo
    Mucor fungus on black background, digital illustration.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    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.
    Illustration of gluten particles damaging intestinal villi. — Stock Photo
    Illustration of gluten particles damaging intestinal villi.
    Nerve cell on black background, digital illustration. — Stock Photo
    Nerve cell on black background, digital illustration.
    Dividing cancerous cells — Stock Photo
    Dividing cancerous cells
    Digital 3d colored illustration of cancer cell in process of mitosis. — Stock Photo
    Digital 3d colored illustration of cancer cell in process of mitosis.
    Penicillinum fungus on black background, digital illustration. — Stock Photo
    Penicillinum fungus on black background, digital illustration.
    Gene editing, conceptual digital illustration. — Stock Photo
    Gene editing, conceptual digital illustration.
    DNA (deoxyribonucleic acid) transcription, computer illustration. — Stock Photo
    DNA (deoxyribonucleic acid) transcription, computer illustration.
    Digital illustration of red virus particles on plain background. — Stock Photo
    Digital illustration of red virus particles on plain background.
    Conceptual illustration of piece of cake and magnification of bacterium of food-borne infection on white background. — Stock Photo
    Conceptual illustration of piece of cake and magnification of bacterium of food-borne infection on white background.
    Nerve cell with pink colored axon on blue background, digital illustration. — Stock Photo
    Nerve cell with pink colored axon on blue background, digital illustration.
    Corynebacterium diphtheriae, computer illustration. C. diphtheriae is a gram-positive rod-shaped bacterium which is transmitted by respiratory droplets and causes the disease diphtheria — Stock Photo
    Corynebacterium diphtheriae, computer illustration. C. diphtheriae is a gram-positive rod-shaped bacterium which is transmitted by respiratory droplets and causes the disease diphtheria
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.