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818 results

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    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM). — Stock Photo
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM).
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Stem cell research — Stock Photo
    Stem cell research
    58-cell blastocyst embryo — Stock Photo
    58-cell blastocyst embryo
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Used surgical swab — Stock Photo
    Used surgical swab
    Used surgical swab — Stock Photo
    Used surgical swab
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Rotavirus virus particles in the bloodstream — Stock Photo
    Rotavirus virus particles in the bloodstream
    Pathological anatomy of atherosclerosis — Stock Photo
    Pathological anatomy of atherosclerosis
    West Nile virus particles — Stock Photo
    West Nile virus particles
    Cut in an artery seen from its interior — Stock Photo
    Cut in an artery seen from its interior
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Rotavirus virus particles in the blood — Stock Photo
    Rotavirus virus particles in the blood
    Red blood cells in an artery — Stock Photo
    Red blood cells in an artery
    Atherosclerosis harming blood vessel — Stock Photo
    Atherosclerosis harming blood vessel
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Rotavirus virus particles in the bloodstream — Stock Photo
    Rotavirus virus particles in the bloodstream
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Christmas cactus pollen — Stock Photo
    Christmas cactus pollen
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Densovirus virus particles in the bloodstream — Stock Photo
    Densovirus virus particles in the bloodstream
    Four-cell embryo — Stock Photo
    Four-cell embryo
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Normal human red blood cell — Stock Photo
    Normal human red blood cell
    Red blood cells — Stock Photo
    Red blood cells
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Visual rendering of Sleeping sickness — Stock Photo
    Visual rendering of Sleeping sickness
    Cancer cell structure and shape — Stock Photo
    Cancer cell structure and shape
    Red and white blood cells — Stock Photo
    Red and white blood cells
    Normal blood cells in artery — Stock Photo
    Normal blood cells in artery
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Red blood cells — Stock Photo
    Red blood cells
    Normal human red blood cell — Stock Photo
    Normal human red blood cell
    Visual rendering of Sleeping sickness — Stock Photo
    Visual rendering of Sleeping sickness
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Red blood cells — Stock Photo
    Red blood cells
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Red blood cells and blood vessel — Stock Photo
    Red blood cells and blood vessel
    Normal blood cells in artery — Stock Photo
    Normal blood cells in artery
    Red blood cells and blood vessel — Stock Photo
    Red blood cells and blood vessel
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Human blood cells — Stock Photo
    Human blood cells
    Lung cancer cell — Stock Photo
    Lung cancer cell
    Rectal cancer cell — Stock Photo
    Rectal cancer cell
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Normal blood cells in artery — Stock Photo
    Normal blood cells in artery
    Human blood cells — Stock Photo
    Human blood cells
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Sickle cell anemia — Stock Photo
    Sickle cell anemia
    Normal red blood cells — Stock Photo
    Normal red blood cells