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    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Human T-cell lymphotropic virus particle, digital conceptual illustration. — Stock Photo
    Human T-cell lymphotropic virus particle, digital conceptual illustration.
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell. — Stock Photo
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell.
    White blood cell — Stock Photo
    White blood cell
    Close-up 3d illustration of blue cells pattern with red nuclei. — Stock Photo
    Close-up 3d illustration of blue cells pattern with red nuclei.
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Human cell membrane, digital illustration. — Stock Photo
    Human cell membrane, digital illustration.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of healthy human nervous cell. — Stock Photo
    Illustration of healthy human nervous cell.
    Erythrocytes or red blood cells — Stock Photo
    Erythrocytes or red blood cells
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.
    Activated human macrophage — Stock Photo
    Activated human macrophage
    HIV virus particles — Stock Photo
    HIV virus particles
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Activated platelets in blood vessel — Stock Photo
    Activated platelets in blood vessel
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Monocyte in human blood, computer illustration. — Stock Photo
    Monocyte in human blood, computer illustration.
    Neural network showing synaptic terminals — Stock Photo
    Neural network showing synaptic terminals
    Colored digital illustration of cancer cells. — Stock Photo
    Colored digital illustration of cancer cells.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Red blood cells — Stock Photo
    Red blood cells
    Adenocarcinoma of the endometrium — Stock Photo
    Adenocarcinoma of the endometrium
    Close up businesswoman touching, using smart phone — Stock Photo
    Close up businesswoman touching, using smart phone
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Undifferentiated stem cells — Stock Photo
    Undifferentiated stem cells
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Ovarian cells section — Stock Photo
    Ovarian cells section
    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.
    Digital illustration of human cells on blue background. — Stock Photo
    Digital illustration of human cells on blue background.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    3d illustration of internal structure of human cell. — Stock Photo
    3d illustration of internal structure of human cell.
    Normal human arteries, — Stock Photo
    Normal human arteries,
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Illustration of blue illuminated cancer cell. — Stock Photo
    Illustration of blue illuminated cancer cell.
    Close up woman using digital shopping list on smart phone in supermarket — Stock Photo
    Close up woman using digital shopping list on smart phone in supermarket
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    3d illustration of top view of skin-colored cell pattern. — Stock Photo
    3d illustration of top view of skin-colored cell pattern.
    Colored illustration of green human nerve cell. — Stock Photo
    Colored illustration of green human nerve cell.
    Red blood cells — Stock Photo
    Red blood cells
    Testicular cancer or teratoma — Stock Photo
    Testicular cancer or teratoma
    Artwork of plasma cells — Stock Photo
    Artwork of plasma cells
    Activated blood cell fragments platelets, coloured scanning electron micrograph. — Stock Photo
    Activated blood cell fragments platelets, coloured scanning electron micrograph.
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Two-cell embryo — Stock Photo
    Two-cell embryo
    Colored scanning electron micrograph of cancer cells from human colon. — Stock Photo
    Colored scanning electron micrograph of cancer cells from human colon.
    Brain cancer, conceptual computer illustration — Stock Photo
    Brain cancer, conceptual computer illustration
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus. — Stock Photo
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus.
    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.
    Human T-cell lymphotropic virus particle, digital conceptual illustration. — Stock Photo
    Human T-cell lymphotropic virus particle, digital conceptual illustration.
    3d illustration of sperm cells approaching egg cell on colorful blue background. — Stock Photo
    3d illustration of sperm cells approaching egg cell on colorful blue background.