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    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.
    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, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Sickle cell anemia — Stock Photo
    Sickle cell anemia
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Normal blood cells in artery — Stock Photo
    Normal blood cells in artery
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    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.
    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
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    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
    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
    Digital illustration of cross-section of blood vessel with acute lymphoblastic leukaemia showing abundant lymphoblasts. — Stock Photo
    Digital illustration of cross-section of blood vessel with acute lymphoblastic leukaemia showing abundant lymphoblasts.
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration. — Stock Photo
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration.
    Round red cells on plain background, digital illustration. — Stock Photo
    Round red cells on plain background, digital illustration.
    Illustration of human blood cells in blood stream. — Stock Photo
    Illustration of human blood cells in blood stream.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Digital artwork of white blood cells attacking illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking illuminated cancer cell.
    Plasmodium malariae protozoan and red blood cells in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoan and red blood cells in blood vessel, computer illustration.
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Plasmodium vivax protozoa and red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoa and red blood cells, digital illustration.
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration — Stock Photo
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration
    Immune system T-lymphocytes cells binding antigen, digital illustration. — Stock Photo
    Immune system T-lymphocytes cells binding antigen, digital illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Red blood cells — Stock Photo
    Red blood cells
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Human blood, computer illustration — Stock Photo
    Human blood, computer 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.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    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.
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Red blood cells in an artery — Stock Photo
    Red blood cells in an artery
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, 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.
    Plasmodium ovale protozoan inside red blood cells at the ring-form trophozoite stage, computer illustration — Stock Photo
    Plasmodium ovale protozoan inside red blood cells at the ring-form trophozoite stage, computer illustration
    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.
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    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.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    3d digital illustration of narrowed blood vessel. — Stock Photo
    3d digital illustration of narrowed blood vessel.
    Medical nanorobot in blood vessel, digital illustration. — Stock Photo
    Medical nanorobot in blood vessel, digital illustration.
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets. — Stock Photo
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets.
    Macrophage foam cells containing lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells containing lipid droplets, digital illustration.
    Plasmodium ovale protozoan inside red blood cells in the stage of schizont, computer illustration — Stock Photo
    Plasmodium ovale protozoan inside red blood cells in the stage of schizont, computer illustration
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Human cytomegalovirus particles in blood flow, digital illustration. — Stock Photo
    Human cytomegalovirus particles in blood flow, digital illustration.