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    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    Activated platelet from peripheral blood — Stock Photo
    Activated platelet from peripheral blood
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Nerve cell with pink colored axon on blue background, digital illustration. — Stock Photo
    Nerve cell with pink colored axon on blue background, digital illustration.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Abstract human brain nerve cells, digital illustration. — Stock Photo
    Abstract human brain nerve cells, digital illustration.
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    Technician collecting equipment from transfer hatch in sterile laboratory. — Stock Photo
    Technician collecting equipment from transfer hatch in sterile laboratory.
    Giant cell tumour of the bone — Stock Photo
    Giant cell tumour of the bone
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia
    Digital illustration of human cells on blue background. — Stock Photo
    Digital illustration of human cells on blue background.
    Red blood cells — Stock Photo
    Red blood cells
    Nerve cell in space, conceptual digital illustration. — Stock Photo
    Nerve cell in space, conceptual digital illustration.
    Colored scanning electron micrograph of stem cell-derived motor neuron cell. — Stock Photo
    Colored scanning electron micrograph of stem cell-derived motor neuron cell.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone 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.
    Close-up of rack of cell cultures in bottles in laboratory. — Stock Photo
    Close-up of rack of cell cultures in bottles in laboratory.
    3d illustration of sperm cells frozen into ice cubes. — Stock Photo
    3d illustration of sperm cells frozen into ice cubes.
    Petri dishes with colorful liquids for microbiology research. — Stock Photo
    Petri dishes with colorful liquids for microbiology research.
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Bacteria and viruses in human artery, digital illustration. — Stock Photo
    Bacteria and viruses in human artery, digital illustration.
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Measles virus particle, computer illustration. — Stock Photo
    Measles virus particle, computer illustration.
    Fat cells, conceptual computer illustration. — Stock Photo
    Fat cells, conceptual computer illustration.
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Sperm cell fertilising an egg cell — Stock Photo
    Sperm cell fertilising an egg cell
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Female reproductive system — Stock Photo
    Female reproductive system
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Transparent sperm cells moving towards round blue coloured egg cell. — Stock Photo
    Transparent sperm cells moving towards round blue coloured egg cell.
    In vitro fertilisation, computer illustration — Stock Photo
    In vitro fertilisation, computer illustration
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Abstract yellow colored cancer cell on black background, digital illustration. — Stock Photo
    Abstract yellow colored cancer cell on black background, digital illustration.
    Sickle cell anaemia — Stock Photo
    Sickle cell anaemia
    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.
    Nerve cell structure on plain background — Stock Photo
    Nerve cell structure on plain background
    Nudaurelia capensis omega virus particles — Stock Photo
    Nudaurelia capensis omega virus particles
    Illustration of a cancer cell. — Stock Photo
    Illustration of a cancer cell.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    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.
    3d illustration of cancer cell in process of dividing. — Stock Photo
    3d illustration of cancer cell in process of dividing.
    Colored illustration of nerve cell on dark background. — Stock Photo
    Colored illustration of nerve cell on dark background.
    Digital illustration of trypanosomes in red blood cells in blood causing sleeping sickness. — Stock Photo
    Digital illustration of trypanosomes in red blood cells in blood causing sleeping sickness.
    Red blood cells — Stock Photo
    Red blood cells
    Animal cell during cytokinesis cell division, digital illustration. — Stock Photo
    Animal cell during cytokinesis cell division, digital illustration.
    Anatomy of adrenal gland with labels — Stock Photo
    Anatomy of adrenal gland with labels
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia
    Egg and sperm fertilization process — Stock Photo
    Egg and sperm fertilization process
    Abstract animal cells, digital illustration. — Stock Photo
    Abstract animal cells, digital illustration.
    Cancer cell and T cells — Stock Photo
    Cancer cell and T cells
    Measles virus particle, computer illustration. — Stock Photo
    Measles virus particle, computer illustration.
    Human sperm cells — Stock Photo
    Human sperm cells
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.