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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.
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria. — Stock Photo
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria.
    Safety of drinking water. Conceptual illustration showing hepatitis A virus in drop of water. — Stock Photo
    Safety of drinking water. Conceptual illustration showing hepatitis A virus in drop of water.
    Female silhouette with leg pain, digital illustration. — Stock Photo
    Female silhouette with leg pain, digital illustration.
    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).
    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.
    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.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    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
    Visual rendering of arthritic shoulder — Stock Photo
    Visual rendering of arthritic shoulder
    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.
    Human skeleton with shoulder pain, conceptual computer illustration. — Stock Photo
    Human skeleton with shoulder pain, conceptual computer illustration.
    Flush toilet microbes, conceptual digital illustration on white background. — Stock Photo
    Flush toilet microbes, conceptual digital illustration on white background.
    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.
    African American man with Autism working in office — Stock Photo
    African American man with Autism working in office
    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.
    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.
    Woman with bipolar disorder shopping in supermarket — Stock Photo
    Woman with bipolar disorder shopping in supermarket
    Illustration of painful lower spine in human skeleton part. — Stock Photo
    Illustration of painful lower spine in human skeleton part.
    Illustration of senior man silhouette with visible thyroid gland. — Stock Photo
    Illustration of senior man silhouette with visible thyroid gland.
    Diseased adrenal glands in human body, conceptual digital illustration. — Stock Photo
    Diseased adrenal glands in human body, conceptual digital illustration.
    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.
    Male body with diseased colon, computer illustration. — Stock Photo
    Male body with diseased colon, computer illustration.
    Abstract human immunodeficiency virus structure, scientific digital illustration. — Stock Photo
    Abstract human immunodeficiency virus structure, scientific digital illustration.
    Kidney cancer in male body, conceptual digital illustration. — Stock Photo
    Kidney cancer in male body, conceptual 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.
    Man with Traumatic Brain Injury taking a walk with his cane — Stock Photo
    Man with Traumatic Brain Injury taking a walk with his cane
    Illustration of thyroid gland in transparent male silhouette. — Stock Photo
    Illustration of thyroid gland in transparent male silhouette.
    Man with backache due to sitting, computer illustration — Stock Photo
    Man with backache due to sitting, computer illustration
    Inflamed ligaments in human hips, conceptual computer illustration — Stock Photo
    Inflamed ligaments in human hips, conceptual 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
    Prosthetic knee joint — Stock Photo
    Prosthetic knee joint
    Asian man with Autism working in office — Stock Photo
    Asian man with Autism working in office
    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.
    Aspergilloma of lungs and close-up of Aspergillus fungus, digital illustration. — Stock Photo
    Aspergilloma of lungs and close-up of Aspergillus fungus, digital illustration.
    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.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    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