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    Orange colored nerve cell on dark background, digital illustration. — Stock Photo
    Orange colored nerve cell on dark background, digital illustration.
    Blue colored nerve cell on dark background, digital illustration. — Stock Photo
    Blue colored nerve cell on dark background, digital illustration.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Abstract animal cell on white background, digital illustration. — Stock Photo
    Abstract animal cell on white background, digital illustration.
    Illustration of transparent cancer cell on blue background. — Stock Photo
    Illustration of transparent cancer cell on blue background.
    Atomic structure, computer illustration — Stock Photo
    Atomic structure, computer illustration
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Stomach cancer cell, computer illustration — Stock Photo
    Stomach cancer cell, computer illustration
    Magnified digital illustration of leukocyte cell. — Stock Photo
    Magnified digital illustration of leukocyte cell.
    Genetic engineering, illustration. Synthetic small-ribonucleic acid (sRNA) being injected (needle tip at upper right) into the cell cytoplasm as part of a process of genetic engineering — Stock Photo
    Genetic engineering, illustration. Synthetic small-ribonucleic acid (sRNA) being injected (needle tip at upper right) into the cell cytoplasm as part of a process of genetic engineering
    Animal cell during cytokinesis (cell division), illustration. — Stock Photo
    Animal cell during cytokinesis (cell division), illustration.
    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue.
    Digital illustration of human nerve cell with dendrites. — Stock Photo
    Digital illustration of human nerve cell with dendrites.
    Nerve cell structure in cross section on black background, digital illustration. — Stock Photo
    Nerve cell structure in cross section on black background, digital illustration.
    Purple colored nerve cell on dark background, digital illustration. — Stock Photo
    Purple colored nerve cell on dark background, digital illustration.
    Magnified digital illustration of dendritic cell. — Stock Photo
    Magnified digital illustration of dendritic cell.
    Illustration of human nervous receptors on white background. — Stock Photo
    Illustration of human nervous receptors on white background.
    Purple colored nerve cell on dark background, digital illustration. — Stock Photo
    Purple colored nerve cell on dark background, digital illustration.
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Illustration of human spinal vertebra on white background. — Stock Photo
    Illustration of human spinal vertebra on white background.
    Illustration of human spinal vertebra on white background. — Stock Photo
    Illustration of human spinal vertebra on white background.
    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.
    Structure of animal cell — Stock Photo
    Structure of animal cell
    Digital image of spiral Sculptor Galaxy. — Stock Photo
    Digital image of spiral Sculptor Galaxy.
    Spiral galaxy in Giraffe constellation — Stock Photo
    Spiral galaxy in Giraffe constellation
    Illustration of 4 cell stage egg on blue background. — Stock Photo
    Illustration of 4 cell stage egg on blue background.
    IC342 spiral galaxy in constellation Camelopardalis — Stock Photo
    IC342 spiral galaxy in constellation Camelopardalis
    Animal cells with mitochondria, digital illustration. — Stock Photo
    Animal cells with mitochondria, digital illustration.
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Illustration of human nerve cell connections. — Stock Photo
    Illustration of human nerve cell connections.
    Digital artwork showing inclusion composed of group of chlamydia reticulate bodies of Chlamydia trachomatis bacteria. — Stock Photo
    Digital artwork showing inclusion composed of group of chlamydia reticulate bodies of Chlamydia trachomatis bacteria.
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Illustration of yellow human egg cell on blue background. — Stock Photo
    Illustration of yellow human egg cell on blue background.
    Animal cell during cytokinesis (cell division), illustration. — Stock Photo
    Animal cell during cytokinesis (cell division), illustration.
    Caudate nucleus of the brain, computer illustration — Stock Photo
    Caudate nucleus of the brain, computer illustration
    Abstract computer illustration of RNA polymerase transcribing DNA to messenger RNA mRNA. — Stock Photo
    Abstract computer illustration of RNA polymerase transcribing DNA to messenger RNA mRNA.
    Illustration of synapse structure in cross section. — Stock Photo
    Illustration of synapse structure in cross section.
    Colored illustration of green human nerve cell. — Stock Photo
    Colored illustration of green human nerve cell.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Illustration of blue cancer cell on blue background. — Stock Photo
    Illustration of blue cancer cell on blue background.
    Spiral galaxy NGC 3370, HST image. This galaxy is around 98 million light years from Earth. — Stock Photo
    Spiral galaxy NGC 3370, HST image. This galaxy is around 98 million light years from Earth.
    Digital illustration of human cells on blue background. — Stock Photo
    Digital illustration of human cells on blue background.
    Digital illustration of human nerve cell with dendrites. — Stock Photo
    Digital illustration of human nerve cell with dendrites.
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Illustration of giardia parasite on blue background. — Stock Photo
    Illustration of giardia parasite on blue background.
    Illustration of human nervous receptors on black background. — Stock Photo
    Illustration of human nervous receptors on black background.
    Human cell, computer illustration — Stock Photo
    Human cell, computer illustration
    Plasma cell, computer illustration. Plasma cells, which are found in the blood and lymph, are mature B lymphocytes (white blood cells) that produce and secrete antibodies during an immune response. — Stock Photo
    Plasma cell, computer illustration. Plasma cells, which are found in the blood and lymph, are mature B lymphocytes (white blood cells) that produce and secrete antibodies during an immune response.
    3d rendered illustration of purple nerve cell. — Stock Photo
    3d rendered illustration of purple nerve cell.
    Illustration of dendrites of human nerve cell. — Stock Photo
    Illustration of dendrites of human nerve cell.
    DNA (deoxyribonucleic acid) transcription, computer illustration. — Stock Photo
    DNA (deoxyribonucleic acid) transcription, computer illustration.
    Illustration of human egg cell and sperm on blue background. — Stock Photo
    Illustration of human egg cell and sperm on blue background.
    3d illustration of cross-section of hepatitis pathogen with DNA, cell nucleus and receptors. — Stock Photo
    3d illustration of cross-section of hepatitis pathogen with DNA, cell nucleus and receptors.
    Cells dividing, computer illustration — Stock Photo
    Cells dividing, computer illustration
    Magnified digital illustration of water bear. — Stock Photo
    Magnified digital illustration of water bear.
    Abstract animal cell on blue background, digital illustration. — Stock Photo
    Abstract animal cell on blue background, digital illustration.
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Starscape with spiral galaxy in Camelopardalis constellation — Stock Photo
    Starscape with spiral galaxy in Camelopardalis constellation