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    Cytotoxic T-cells capturing cancer cells, digital illustration. — Stock Photo
    Cytotoxic T-cells capturing cancer cells, digital illustration.
    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Female scientist holding multi-well plate with growth medium. — Stock Photo
    Female scientist holding multi-well plate with growth medium.
    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.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Genetic engineering, conceptual illustration — Stock Photo
    Genetic engineering, conceptual illustration
    Human cytomegalovirus particles in blood flow, digital illustration. — Stock Photo
    Human cytomegalovirus particles in blood flow, digital illustration.
    Insulin binding to insulin receptor — Stock Photo
    Insulin binding to insulin receptor
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell
    Adipocyte fat cells, digital illustration. — Stock Photo
    Adipocyte fat cells, digital illustration.
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    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.
    Illustration of cell membrane with embedded proteins, molecules and T-cell receptor. — Stock Photo
    Illustration of cell membrane with embedded proteins, molecules and T-cell receptor.
    Nipah virus particle, digital artwork. — Stock Photo
    Nipah virus particle, digital artwork.
    Red blood cells in blood stream — Stock Photo
    Red blood cells in blood stream
    Osteoclast cell structure — Stock Photo
    Osteoclast cell structure
    Illustration of silhouette of pregnant woman with visible uterus and 16 cell stage embryo. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and 16 cell stage embryo.
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Structure and shape of basophil — Stock Photo
    Structure and shape of basophil
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    Nudaurelia capensis omega virus particles — Stock Photo
    Nudaurelia capensis omega virus particles
    HIV viruses infecting T-lymphocyte cell — Stock Photo
    HIV viruses infecting T-lymphocyte cell
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is brown. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (blue) contain enzymes for digesting foreign particles — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is brown. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (blue) contain enzymes for digesting foreign particles
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Cancer cells and blood vessels — Stock Photo
    Cancer cells and blood vessels
    Microvilli from the small intestine — Stock Photo
    Microvilli from the small intestine
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Conceptual illustration of chicken eggs in carton and magnification of bacterium of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacterium of food-borne infection on white background.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    White blood cell and proteins, digital illustration. — Stock Photo
    White blood cell and proteins, digital illustration.
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Cancer cells on plain background, digital illustration. — Stock Photo
    Cancer cells on plain background, digital illustration.
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Light micrograph of cardiac callosity. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of cardiac callosity. Haematoxylin and eosin stain.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Red blood cells — Stock Photo
    Red blood cells
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Magnified digital illustration of dendritic cell. — Stock Photo
    Magnified digital illustration of dendritic cell.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple. — Stock Photo
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple.
    3d illustration of blue cells pattern with yellow nuclei. — Stock Photo
    3d illustration of blue cells pattern with yellow nuclei.
    Parasites attacking female egg cell, digital illustration. — Stock Photo
    Parasites attacking female egg cell, digital illustration.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Animal cell during cytokinesis (cell division), illustration. — Stock Photo
    Animal cell during cytokinesis (cell division), illustration.
    Cancer cell anatomy — Stock Photo
    Cancer cell anatomy
    3d rendered illustration of purple nerve cell. — Stock Photo
    3d rendered illustration of purple nerve cell.
    Nerve cell structure — Stock Photo
    Nerve cell structure
    Oesophageal cancer, composite digital illustration with human body and cancer cell. — Stock Photo
    Oesophageal cancer, composite digital illustration with human body and cancer cell.
    Illustration of enzyme complex ATP production in mitochondrion. — Stock Photo
    Illustration of enzyme complex ATP production in mitochondrion.
    Monocyte in human blood, computer illustration. — Stock Photo
    Monocyte in human blood, computer illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    3d rendered illustration of human nerve cell on blue background. — Stock Photo
    3d rendered illustration of human nerve cell on blue background.