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    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Digital illustration of abnormal blood cells infected by hairy cell leukemia. — Stock Photo
    Digital illustration of abnormal blood cells infected by hairy cell leukemia.
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Coloured scanning electron micrograph of cancer cells from colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cells from colon.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Destruction of a cancer cell by antibodies — Stock Photo
    Destruction of a cancer cell by antibodies
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Abstract green colored cancer cells on tissue, digital illustration. — Stock Photo
    Abstract green colored cancer cells on tissue, digital illustration.
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration. — Stock Photo
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration.
    Green coli bacteria on plain background, digital illustration. — Stock Photo
    Green coli bacteria on plain background, digital illustration.
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria. — Stock Photo
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria.
    Digital illustration of nerve neurons cells. — Stock Photo
    Digital illustration of nerve neurons cells.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Top view of microbes growing on agar plate on plain background. — Stock Photo
    Top view of microbes growing on agar plate on plain background.
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink). — Stock Photo
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink).
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Digital artwork of unicellular yeast fungus Candida auris. — Stock Photo
    Digital artwork of unicellular yeast fungus Candida auris.
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Abstract illustration of white bacilli bacteria, full frame. — Stock Photo
    Abstract illustration of white bacilli bacteria, full frame.
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    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.
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    Close-up of honeycomb on plate and jars of fresh honey on rustic table — Stock Photo
    Close-up of honeycomb on plate and jars of fresh honey on rustic table
    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red blood cells
    SARS-CoV-2 viruses and activated neutrophils, conceptual computer illustration — Stock Photo
    SARS-CoV-2 viruses and activated neutrophils, conceptual computer illustration
    Human red blood cells — Stock Photo
    Human red blood cells
    Human compact bone tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human compact bone tissue, light micrograph. Haematoxylin and eosin stain.
    White blood cells — Stock Photo
    White blood cells
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    Campylobacter jejuni bacteria with flagella, digital artwork. — Stock Photo
    Campylobacter jejuni bacteria with flagella, digital artwork.
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Digital illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Digital illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    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.
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Blood cells, light micrograph. — Stock Photo
    Blood cells, light micrograph.
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Scientists preparing blood sample for analysis under light microscope. — Stock Photo
    Scientists preparing blood sample for analysis under light microscope.
    Illustration of red blood cells affected by sickle cell anaemia with crescent-shaped cells. — Stock Photo
    Illustration of red blood cells affected by sickle cell anaemia with crescent-shaped cells.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone.
    Cancer cell and T cells — Stock Photo
    Cancer cell and T cells
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice — Stock Photo
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Illustration different types of polymeric nanoparticles used for drug delivery. From clockwise: nanosphere (top left), dendrimer (top right), polymer micelle (bottom right) and polymersome (bottom left). — Stock Photo
    Illustration different types of polymeric nanoparticles used for drug delivery. From clockwise: nanosphere (top left), dendrimer (top right), polymer micelle (bottom right) and polymersome (bottom left).
    Human brain with highlighted temporal lobe and close-up view of neurons located in temporal lobe, computer illustration — Stock Photo
    Human brain with highlighted temporal lobe and close-up view of neurons located in temporal lobe, computer illustration
    Artwork of plasma cells — Stock Photo
    Artwork of plasma cells
    3d illustration of cancer cells attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cells attacked and killed by lymphocytes.
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes).
    Nerve cells and intercellular junctions — Stock Photo
    Nerve cells and intercellular junctions