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    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
    Scientist pointing at scanning electron micrographs of different nanofibre structures. — Stock Photo
    Scientist pointing at scanning electron micrographs of different nanofibre structures.
    Coloured scanning electron micrograph of cancer cells from colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cells from colon.
    Escherichia coli bacteria on gecko tongue — Stock Photo
    Escherichia coli bacteria on gecko tongue
    Activated human macrophage — Stock Photo
    Activated human macrophage
    Coloured scanning electron micrograph of tardigrade water bear. — Stock Photo
    Coloured scanning electron micrograph of tardigrade water bear.
    Human smooth muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human smooth muscle, light micrograph. Haematoxylin and eosin stain.
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells. — Stock Photo
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells.
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine. — Stock Photo
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine.
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Section through a lily stem — Stock Photo
    Section through a lily stem
    Male sex cell — Stock Photo
    Male sex cell
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue — Stock Photo
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae. — Stock Photo
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Pancreatic cells. Colored transmission electron micrograph (TEM) of acinar (exocrine) pancreatic cells (red) adjacent to hormone- secreting (endocrine) Islet of Langerhans cells (yellow) — Stock Photo
    Pancreatic cells. Colored transmission electron micrograph (TEM) of acinar (exocrine) pancreatic cells (red) adjacent to hormone- secreting (endocrine) Islet of Langerhans cells (yellow)
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Scanning electron micrograph of Brevibacteria on human feet causing odour. — Stock Photo
    Scanning electron micrograph of Brevibacteria on human feet causing odour.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Bone from the vertebral column — Stock Photo
    Bone from the vertebral column
    Blue colored dust mite, digital illustration. — Stock Photo
    Blue colored dust mite, digital illustration.
    Breast cancer cells growing in culture — Stock Photo
    Breast cancer cells growing in culture
    Planktonic unicellular alga Diploneis sp. — Stock Photo
    Planktonic unicellular alga Diploneis sp.
    Chrysanthemum flower bud, light micrograph. — Stock Photo
    Chrysanthemum flower bud, light micrograph.
    Colored scanning electron micrograph of mains cable damaged by mouse teeth. — Stock Photo
    Colored scanning electron micrograph of mains cable damaged by mouse teeth.
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Mature virus and budding release of HIV — Stock Photo
    Mature virus and budding release of HIV
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Illustration of human kidney and light micrograph of section with glomerulus. — Stock Photo
    Illustration of human kidney and light micrograph of section with glomerulus.
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin.
    Prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cells, coloured scanning electron micrograph.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Light micrograph of rectal papilloma on white background, — Stock Photo
    Light micrograph of rectal papilloma on white background,
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper. — Stock Photo
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper.
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM). — Stock Photo
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM).
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Basal cell carcinoma — Stock Photo
    Basal cell carcinoma
    Illustration of abstract cancer cell with tentacles. — Stock Photo
    Illustration of abstract cancer cell with tentacles.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Illustration of Lactobacillus colony — Stock Photo
    Illustration of Lactobacillus colony
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue) — Stock Photo
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue)