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    Cancer cell being attacked by leukocytes, computer illustration — Stock Photo
    Cancer cell being attacked by leukocytes, computer 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
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Pseudostratified columnar epithelium, digital illustration. — Stock Photo
    Pseudostratified columnar epithelium, digital illustration.
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Red blood cells in bloodstream — Stock Photo
    Red blood cells in bloodstream
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium. — Stock Photo
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium.
    Illustration of abnormal red blood cells known as spur cells acanthocytes. — Stock Photo
    Illustration of abnormal red blood cells known as spur cells acanthocytes.
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Bacteria and virus on human skin, digital illustration. — Stock Photo
    Bacteria and virus on human skin, digital illustration.
    Digital illustration of human digestive system and close-up of intestinal bacteria. — Stock Photo
    Digital illustration of human digestive system and close-up of intestinal bacteria.
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    3d illustration of cholera pathogens in dark green water. — Stock Photo
    3d illustration of cholera pathogens in dark green water.
    Red blood cells — Stock Photo
    Red blood cells
    Cancer cell being attacked by leukocytes, computer illustration — Stock Photo
    Cancer cell being attacked by leukocytes, computer illustration
    Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food — Stock Photo
    Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food
    3d illustration of transparent cells with nuclei on purple background. — Stock Photo
    3d illustration of transparent cells with nuclei on purple background.
    Blood clot structure — Stock Photo
    Blood clot structure
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Cancer cell anatomy — Stock Photo
    Cancer cell anatomy
    Researcher handling stem cell cultures in laboratory during research. — Stock Photo
    Researcher handling stem cell cultures in laboratory during research.
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system. — Stock Photo
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system.
    Digital 3d colored illustration of cancer cell in process of mitosis. — Stock Photo
    Digital 3d colored illustration of cancer cell in process of mitosis.
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Pathological anatomy of atherosclerosis — Stock Photo
    Pathological anatomy of atherosclerosis
    Human immunodeficiency virus structure — Stock Photo
    Human immunodeficiency virus structure
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red blood cells
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Close-up of T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    Close-up of T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Human compact bone tissue, light micrograph. — Stock Photo
    Human compact bone tissue, light micrograph.
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the — Stock Photo
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    3d illustration of green colored virus particles. — Stock Photo
    3d illustration of green colored virus particles.
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres. — Stock Photo
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres.
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Human bone marrow, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human bone marrow, light micrograph. Haematoxylin and eosin stain.
    T-cells (turquoise) surrounding a tumour (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    T-cells (turquoise) surrounding a tumour (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Malaria infection infecting red blood cells, digital illustration. — Stock Photo
    Malaria infection infecting red blood cells, digital illustration.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Stem cell cultures on weighed in laboratory. — Stock Photo
    Stem cell cultures on weighed in laboratory.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cells.
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    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.
    Nanomachines working on red blood cells, digital illustration. — Stock Photo
    Nanomachines working on red blood cells, digital illustration.