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    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Digital illustration of cutaway view of human cell membrane. — Stock Photo
    Digital illustration of cutaway view of human cell membrane.
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell. — Stock Photo
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Programmed cell death in immune system, illustration. — Stock Photo
    Programmed cell death in immune system, illustration.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    Stages of autophagy mechanism — Stock Photo
    Stages of autophagy mechanism
    Human white blood cell — Stock Photo
    Human white blood cell
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Human white blood cell — Stock Photo
    Human white blood cell
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    3d illustration of the nucleus inside a eukaryotic cell. The nucleus contains the cell's genetic information in the form of DNA (deoxyribonucleic acid). The DNA is complexed with proteins and stored as chromatin — Stock Photo
    3d illustration of the nucleus inside a eukaryotic cell. The nucleus contains the cell's genetic information in the form of DNA (deoxyribonucleic acid). The DNA is complexed with proteins and stored as chromatin
    Structure of cellular organelles — Stock Photo
    Structure of cellular organelles
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    3d illustration of blue cells pattern with yellow nuclei. — Stock Photo
    3d illustration of blue cells pattern with yellow nuclei.
    Cell membrane, illustration, colorful image — Stock Photo
    Cell membrane, illustration, colorful image
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    3d illustration of Ebola virus causing viral haemorrhagic fever in bloodstream with red and white blood cells. — Stock Photo
    3d illustration of Ebola virus causing viral haemorrhagic fever in bloodstream with red and white blood cells.
    Activation of T-cell immune response, illustration. — Stock Photo
    Activation of T-cell immune response, illustration.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Structure of animal cell — Stock Photo
    Structure of animal cell
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Medical illustration of the organ of Corti anatomy — Stock Photo
    Medical illustration of the organ of Corti anatomy
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Illustration of bacteriophages (purple) infecting a bacterial cell. Bacteriophages, or phages, infect a bacterium by attaching to its surface (blue) and injecting genetic material (brown) into the cell — Stock Photo
    Illustration of bacteriophages (purple) infecting a bacterial cell. Bacteriophages, or phages, infect a bacterium by attaching to its surface (blue) and injecting genetic material (brown) into the cell
    Medical illustration of the organ of Corti anatomy — Stock Photo
    Medical illustration of the organ of Corti anatomy
    Microscopic cross section view of HIV virus — Stock Photo
    Microscopic cross section view of HIV virus
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    3d illustration of top view of skin-colored cell pattern. — Stock Photo
    3d illustration of top view of skin-colored cell pattern.
    Human cell membrane, digital illustration. — Stock Photo
    Human cell membrane, digital illustration.
    3d illustration of a lysosome organelle within a eukaryotic cell. Lysosomes are enzyme-filled vesicles that break down waste material, foreign bodies and cellular debris. — Stock Photo
    3d illustration of a lysosome organelle within a eukaryotic cell. Lysosomes are enzyme-filled vesicles that break down waste material, foreign bodies and cellular debris.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    3d illustration of cell division, cell membrane and splitting red nucleus. — Stock Photo
    3d illustration of cell division, cell membrane and splitting red nucleus.
    Light micrograph of a section through a nasal polyp, a benign growth that arises from a mucous membrane. — Stock Photo
    Light micrograph of a section through a nasal polyp, a benign growth that arises from a mucous membrane.
    3d illustration of water drops on close-up part of skin with hair and hair roots. — Stock Photo
    3d illustration of water drops on close-up part of skin with hair and hair roots.
    Illustration of transparent cells with splitting nuclei, cell membrane and visible chromosomes. — Stock Photo
    Illustration of transparent cells with splitting nuclei, cell membrane and visible chromosomes.
    Animal cell structure — Stock Photo
    Animal cell structure
    Illustration of transmembrane proteins and glycolipids on outer surface of cell membrane. — Stock Photo
    Illustration of transmembrane proteins and glycolipids on outer surface of cell membrane.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    3d illustration of red cells pattern, full frame. — Stock Photo
    3d illustration of red cells pattern, full frame.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Amyloid precursor protein of cell membrane, digital illustration. — Stock Photo
    Amyloid precursor protein of cell membrane, digital illustration.
    3d illustration of blue cells pattern with red nuclei. — Stock Photo
    3d illustration of blue cells pattern with red nuclei.
    3d illustration of internal structure of human cell. — Stock Photo
    3d illustration of internal structure of human cell.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Structure of animal cell — Stock Photo
    Structure of animal cell
    Colorful 3d illustration of cell division, cell membrane and splitting red nucleus. — Stock Photo
    Colorful 3d illustration of cell division, cell membrane and splitting red nucleus.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy — Stock Photo
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy
    Anatomy of human ear with membranous labyrinth — Stock Photo
    Anatomy of human ear with membranous labyrinth
    Illustration of purple chloride channels in cell membrane. — Stock Photo
    Illustration of purple chloride channels in cell membrane.
    Epithelial lining of Fallopian tube — Stock Photo
    Epithelial lining of Fallopian tube