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    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Digital illustration of trypanosome protozoan parasites in blood causing sleeping sickness transmitted by blood. — Stock Photo
    Digital illustration of trypanosome protozoan parasites in blood causing sleeping sickness transmitted by blood.
    Illustration of human painful neck on white background. — Stock Photo
    Illustration of human painful neck on white background.
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells. — Stock Photo
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells.
    Coloured X-ray of the foot of a 22-year-old male patient with a spur (osteophyte, highlighted) affecting the tibia (shin bone). — Stock Photo
    Coloured X-ray of the foot of a 22-year-old male patient with a spur (osteophyte, highlighted) affecting the tibia (shin bone).
    Computer illustration of a blood clot inside vein, known as venous thrombus. — Stock Photo
    Computer illustration of a blood clot inside vein, known as venous thrombus.
    Abstract male body with small intestine cancer, computer illustration. — Stock Photo
    Abstract male body with small intestine cancer, computer illustration.
    Colored norovirus particles, digital illustration. — Stock Photo
    Colored norovirus particles, digital illustration.
    Spleen cancer in male body, conceptual computer illustration. — Stock Photo
    Spleen cancer in male body, conceptual computer illustration.
    Diseased liver in male body silhouette, digital illustration. — Stock Photo
    Diseased liver in male body silhouette, digital illustration.
    Illustration of tick parasite crawling on human skin surface. — Stock Photo
    Illustration of tick parasite crawling on human skin surface.
    Handicapped man on wheelchair moving in passage at gym — Stock Photo
    Handicapped man on wheelchair moving in passage at gym
    Illustration of senior man silhouette with visible brain cancer. — Stock Photo
    Illustration of senior man silhouette with visible brain cancer.
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Illustration of human silhouette with painful thyroid gland. — Stock Photo
    Illustration of human silhouette with painful thyroid gland.
    Man with backache, computer illustration — Stock Photo
    Man with backache, computer illustration
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Diseased stomach in abstract female body, digital illustration. — Stock Photo
    Diseased stomach in abstract female body, digital illustration.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    West Nile virus particles — Stock Photo
    West Nile virus particles
    Illustration of cancerous tumour in female mammary glands. — Stock Photo
    Illustration of cancerous tumour in female mammary glands.
    Yellow colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer. — Stock Photo
    Yellow colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.
    Man standing in a dry desert — Stock Photo
    Man standing in a dry desert
    Illustration of human silhouette with inflamed small intestine. — Stock Photo
    Illustration of human silhouette with inflamed small intestine.
    Small pouches in the large intestine — Stock Photo
    Small pouches in the large intestine
    Human silhouette showing lung cancer tumor, conceptual illustration. — Stock Photo
    Human silhouette showing lung cancer tumor, conceptual illustration.
    Illustration of painful lower spine in human skeleton part. — Stock Photo
    Illustration of painful lower spine in human skeleton part.
    Man standing on the snow-covered shore in Antarctica — Stock Photo
    Man standing on the snow-covered shore in Antarctica
    Digital illustration of human leg affected by lymphatic filariasis and close-up of microfilaria worm parasite. — Stock Photo
    Digital illustration of human leg affected by lymphatic filariasis and close-up of microfilaria worm parasite.
    Polar research vessel, in the Antarctic. — Stock Photo
    Polar research vessel, in the Antarctic.
    Abstract human immunodeficiency virus structure, scientific digital illustration. — Stock Photo
    Abstract human immunodeficiency virus structure, scientific digital illustration.
    Mature man using asthma spacer with blue asthma inhaler. — Stock Photo
    Mature man using asthma spacer with blue asthma inhaler.
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration. — Stock Photo
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration.
    Digital illustration of section of human kidney containing kidney stones. — Stock Photo
    Digital illustration of section of human kidney containing kidney stones.
    Man with backache due to sitting, computer illustration — Stock Photo
    Man with backache due to sitting, computer illustration
    Otitis media ear infection caused by Streptococcus pneumoniae bacteria, conceptual computer illustration — Stock Photo
    Otitis media ear infection caused by Streptococcus pneumoniae bacteria, conceptual computer illustration
    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
    Boxes of organic raspberries on farmer market stall. — Stock Photo
    Boxes of organic raspberries on farmer market stall.
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia.
    Illustration of female silhouette with highlighted bladder cancer. — Stock Photo
    Illustration of female silhouette with highlighted bladder cancer.
    Plasmodium ovale protozoan, digital illustration. — Stock Photo
    Plasmodium ovale protozoan, digital illustration.
    Man hugging tree — Stock Photo
    Man hugging tree
    Bacteria forming Dental plaque — Stock Photo
    Bacteria forming Dental plaque
    Colored digital illustration of green cancer cell. — Stock Photo
    Colored digital illustration of green cancer cell.
    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
    Liver tumours, computer illustration — Stock Photo
    Liver tumours, computer illustration
    Digital artwork of illuminated red human cancer cell. — Stock Photo
    Digital artwork of illuminated red human cancer cell.
    Japanese encephalitis virus particles, digital illustration. — Stock Photo
    Japanese encephalitis virus particles, digital illustration.
    Disabled young man using laptop at home — Stock Photo
    Disabled young man using laptop at home
    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
    Abstract transparent male body with glowing stomach cancer, digital illustration. — Stock Photo
    Abstract transparent male body with glowing stomach cancer, digital illustration.
    Closeup of rusty iron surface with corrosion spots and traces of old paint — Stock Photo
    Closeup of rusty iron surface with corrosion spots and traces of old paint
    Coronavirus particles, computer illustration — Stock Photo
    Coronavirus particles, computer illustration
    Digital illustration of Staphylococcus aureus bacteria in alveoli of lungs causing pneumonia. — Stock Photo
    Digital illustration of Staphylococcus aureus bacteria in alveoli of lungs causing pneumonia.
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Arthritic hand anatomy — Stock Photo
    Arthritic hand anatomy
    Digital illustration of human leg affected by lymphatic filariasis and close-up of parasitic nematode worms. — Stock Photo
    Digital illustration of human leg affected by lymphatic filariasis and close-up of parasitic nematode worms.