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    Alveolar tissue macrophage, digital illustration. — Stock Photo
    Alveolar tissue macrophage, digital illustration.
    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    Adenocarcinoma of the sigmoid colon — Stock Photo
    Adenocarcinoma of the sigmoid colon
    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).
    Mid adult blonde woman blowing nose in tissue. — Stock Photo
    Mid adult blonde woman blowing nose in tissue.
    Muscle anatomy of human arm and hand white background — Stock Photo
    Muscle anatomy of human arm and hand white background
    Liver tissue, light micrograph. Animal tissue. — Stock Photo
    Liver tissue, light micrograph. Animal tissue.
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Fresh sliced fruits with mint leaves — Stock Photo
    Fresh sliced fruits with mint leaves
    Abstract close-up of grey fabric structure, digital illustration. — Stock Photo
    Abstract close-up of grey fabric structure, digital illustration.
    Closeup view of glass of strawberry cocktail — Stock Photo
    Closeup view of glass of strawberry cocktail
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Slices of pizza with tuna — Stock Photo
    Slices of pizza with tuna
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Young woman in ill — Stock Photo
    Young woman in ill
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant — Stock Photo
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant
    Man holding Herring in bread roll — Stock Photo
    Man holding Herring in bread roll
    Animal cells with mitochondria, illustration. — Stock Photo
    Animal cells with mitochondria, illustration.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Young bride wiping tears with tissue paper while sitting on sofa — Stock Photo
    Young bride wiping tears with tissue paper while sitting on sofa
    Magnified digital illustration of mammary gland cells. — Stock Photo
    Magnified digital illustration of mammary gland cells.
    Section through the nasal mucosa — Stock Photo
    Section through the nasal mucosa
    Abstract biopolymer structure, conceptual illustration. — Stock Photo
    Abstract biopolymer structure, conceptual illustration.
    Top-down view of two children doing arts and crafts at a wooden table — Stock Photo
    Top-down view of two children doing arts and crafts at a wooden table
    Fat cells structure, computer illustration. — Stock Photo
    Fat cells structure, computer illustration.
    American-style vegetable pizza — Stock Photo
    American-style vegetable pizza
    Closeup view of Lye rolls with Chorizo, onions and rocket — Stock Photo
    Closeup view of Lye rolls with Chorizo, onions and rocket
    Dentist making injection with syringe in open mouth of patient i — Stock Photo
    Dentist making injection with syringe in open mouth of patient i
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Lung cancer cells, digital illustration. — Stock Photo
    Lung cancer cells, digital illustration.
    Human heart with blood vessels and bronchial tree on white background. — Stock Photo
    Human heart with blood vessels and bronchial tree on white background.
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain. — Stock Photo
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain.
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips. — Stock Photo
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips.
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (pink) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (pink)
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Closeup view of date fingers with pistachios — Stock Photo
    Closeup view of date fingers with pistachios
    Close-up 3d illustration of blue cells pattern with red nuclei. — Stock Photo
    Close-up 3d illustration of blue cells pattern with red nuclei.
    Trachea lined with ciliated columnar epithelium — Stock Photo
    Trachea lined with ciliated columnar epithelium
    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.
    Fish burger with sauce — Stock Photo
    Fish burger with sauce
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Thyroid cancer cells, illustration. — Stock Photo
    Thyroid cancer cells, illustration.
    Human heart with blood vessels and bronchial tree on white background. — Stock Photo
    Human heart with blood vessels and bronchial tree on white background.
    Antero-visceral view of liver anatomy — Stock Photo
    Antero-visceral view of liver anatomy
    View of Breast anatomy — Stock Photo
    View of Breast anatomy
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue. — Stock Photo
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue.
    Fallopian tube cellular structure — Stock Photo
    Fallopian tube cellular structure
    Female body showing hips muscles, computer illustration — Stock Photo
    Female body showing hips muscles, computer illustration
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    African American girl social distancing at home during quarantine lockdown, wearing a stripped t-shirt, covering her nose with a tissue while sneezing, in a garden on a sunny day. — Stock Photo
    African American girl social distancing at home during quarantine lockdown, wearing a stripped t-shirt, covering her nose with a tissue while sneezing, in a garden on a sunny day.
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    Layer of cells, computer illustration — Stock Photo
    Layer of cells, computer illustration
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Mid adult woman blowing nose with tissue. — Stock Photo
    Mid adult woman blowing nose with tissue.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ.