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    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Human papilloma virus (HPV), computer illustration. HPV causes warts, which mostly occur on hands and feet. Certain strains also infect genitals. Although most warts are non-malignant (not cancerous), some strains of HPV have been associated — Stock Photo
    Human papilloma virus (HPV), computer illustration. HPV causes warts, which mostly occur on hands and feet. Certain strains also infect genitals. Although most warts are non-malignant (not cancerous), some strains of HPV have been associated
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    Visual rendering of human brain — Stock Photo
    Visual rendering of human brain
    Colored red DNA molecule damage, genetic disorder conceptual illustration. — Stock Photo
    Colored red DNA molecule damage, genetic disorder conceptual illustration.
    Cancer cell spreading, digital illustration. — Stock Photo
    Cancer cell spreading, digital illustration.
    Running female silhouette with glowing nervous system, digital illustration. — Stock Photo
    Running female silhouette with glowing nervous system, digital illustration.
    3d illustration of Spirochaete Borrelia bacteria, the cause of Lyme disease — Stock Photo
    3d illustration of Spirochaete Borrelia bacteria, the cause of Lyme disease
    Diverticula in the large intestine, illustration. — Stock Photo
    Diverticula in the large intestine, illustration.
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration. — Stock Photo
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration.
    Mosasaurus skeleton on black background, digital illustration. — Stock Photo
    Mosasaurus skeleton on black background, digital illustration.
    Aggregatibacter aphrophilus bacteria, computer illustration. — Stock Photo
    Aggregatibacter aphrophilus bacteria, computer illustration.
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines). — Stock Photo
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines).
    Network concept, computer illustration — Stock Photo
    Network concept, computer illustration
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells — Stock Photo
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Covid-19 coronavirus particles, computer illustration — Stock Photo
    Covid-19 coronavirus particles, computer illustration
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Human brain olfactory bulb, digital illustration. — Stock Photo
    Human brain olfactory bulb, digital illustration.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Infected human bronchus — Stock Photo
    Infected human bronchus
    Digital labelled illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B viruses, Entamoeba histolytica. — Stock Photo
    Digital labelled illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B viruses, Entamoeba histolytica.
    Tuberculosis bacteria, 3d illustration. — Stock Photo
    Tuberculosis bacteria, 3d illustration.
    Mycoplasma genitalium parasitic bacteria, digital illustration. — Stock Photo
    Mycoplasma genitalium parasitic bacteria, digital illustration.
    Penicillium fungus, Computer illustration — Stock Photo
    Penicillium fungus, Computer illustration
    Woolly mammoth skeleton, realistic 3d illustration, front view on white background and dropped shadow. — Stock Photo
    Woolly mammoth skeleton, realistic 3d illustration, front view on white background and dropped shadow.
    Cancer cell, computer illustration — Stock Photo
    Cancer cell, computer illustration
    3d illustration of signals transmitting nerve cells. — Stock Photo
    3d illustration of signals transmitting nerve cells.
    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
    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans. — Stock Photo
    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans.
    Illustration of spores of the yeast-like fungus Histoplasma capsulatum. When inhaled these spores can cause a respiratory disease called histoplasmosis — Stock Photo
    Illustration of spores of the yeast-like fungus Histoplasma capsulatum. When inhaled these spores can cause a respiratory disease called histoplasmosis
    Green Adenovirus particles, colored digital 3d illustration. — Stock Photo
    Green Adenovirus particles, colored digital 3d illustration.
    Conceptual illustration of chicken eggs in carton and magnification of bacterium of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacterium of food-borne infection on white background.
    UFOs flying above barren hills, illustration. — Stock Photo
    UFOs flying above barren hills, illustration.
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia. — Stock Photo
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia.
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis — Stock Photo
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis
    Cancer cell with T-cell, — Stock Photo
    Cancer cell with T-cell,
    Osteoclast cell structure — Stock Photo
    Osteoclast cell structure
    Macrophage foam cells containing lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells containing lipid droplets, digital illustration.
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Meningitis bacteria (Neisseria meningitidis), computer illustration — Stock Photo
    Meningitis bacteria (Neisseria meningitidis), computer illustration
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Hepatitis B virus particles in 360-degree panorama view, colored digital illustration. — Stock Photo
    Hepatitis B virus particles in 360-degree panorama view, colored digital illustration.
    Digital illustration of human large intestine on black background. — Stock Photo
    Digital illustration of human large intestine on black background.
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis. — Stock Photo
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis.
    Digital illustration of shaped virus cells. — Stock Photo
    Digital illustration of shaped virus cells.
    Protein molecules, 3d illustration — Stock Photo
    Protein molecules, 3d illustration
    Neural network, computer illustration — Stock Photo
    Neural network, computer illustration
    Digital illustration showing bacteria causing nosocomial pneumonia, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli. — Stock Photo
    Digital illustration showing bacteria causing nosocomial pneumonia, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli.
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Coronary angioplasty stent insertion — Stock Photo
    Coronary angioplasty stent insertion
    Green coli bacteria on plain background, digital illustration. — Stock Photo
    Green coli bacteria on plain background, digital illustration.
    Cell infected with virus particles causing a programmed cell death, 3d illustration — Stock Photo
    Cell infected with virus particles causing a programmed cell death, 3d illustration
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.
    Computer generated image arm reaching for robotic arm — Stock Photo
    Computer generated image arm reaching for robotic arm
    Safety of drinking water. Conceptual illustration showing Pentatrichomonas hominis parasites in drop of water from tap. — Stock Photo
    Safety of drinking water. Conceptual illustration showing Pentatrichomonas hominis parasites in drop of water from tap.
    Colored norovirus particles, digital illustration. — Stock Photo
    Colored norovirus particles, digital illustration.
    Coronary angioplasty stent insertion — Stock Photo
    Coronary angioplasty stent insertion