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    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Mid adult woman blowing nose with tissue. — Stock Photo
    Mid adult woman blowing nose with tissue.
    Close-up of paper towel roll swirl. — Stock Photo
    Close-up of paper towel roll swirl.
    Bacteria on human skin — Stock Photo
    Bacteria on human skin
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow) — Stock Photo
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow)
    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue.
    Closeup view of one red crab on tissue — Stock Photo
    Closeup view of one red crab on tissue
    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
    Simple cuboidal epithelium, digital illustration. — Stock Photo
    Simple cuboidal epithelium, digital illustration.
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Cells coloured in imaging flow cytometry colours, conceptual digital illustration. — Stock Photo
    Cells coloured in imaging flow cytometry colours, conceptual digital illustration.
    Male head and neck muscles, computer illustration. — Stock Photo
    Male head and neck muscles, computer illustration.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    Tomato and cheese pizza — Stock Photo
    Tomato and cheese pizza
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Attractive asian woman using laptop device at cafe — Stock Photo
    Attractive asian woman using laptop device at cafe
    Closeup cropped view of person holding glass of mango Lassi — Stock Photo
    Closeup cropped view of person holding glass of mango Lassi
    Pseudostratified epithelium, light micrograph. Pseudostratified epithelium is a type of epithelium that comprises only a single layer of cells. — Stock Photo
    Pseudostratified epithelium, light micrograph. Pseudostratified epithelium is a type of epithelium that comprises only a single layer of cells.
    Adenocarcinoma of the sigmoid colon — Stock Photo
    Adenocarcinoma of the sigmoid colon
    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.
    Closeup view of chocolate cream in cup — Stock Photo
    Closeup view of chocolate cream in cup
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Illustration of bone structure affected by osteoporosis. Thinning of the bone matrix is visible. — Stock Photo
    Illustration of bone structure affected by osteoporosis. Thinning of the bone matrix is visible.
    Main muscles controlling human posture — Stock Photo
    Main muscles controlling human posture
    Fat cell anatomy, computer illustration. — Stock Photo
    Fat cell anatomy, computer illustration.
    Chicken burger with roasted pepper — Stock Photo
    Chicken burger with roasted pepper
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Technicians preparing and checking samples in manufacturing bioengineering laboratory. — Stock Photo
    Technicians preparing and checking samples in manufacturing bioengineering laboratory.
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Coloured profile (side view) X-ray of a healthy breast. — Stock Photo
    Coloured profile (side view) X-ray of a healthy breast.
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Male head and neck muscles, computer illustration. — Stock Photo
    Male head and neck muscles, computer illustration.
    Colored magnetic resonance imaging scans of healthy brain of patient. — Stock Photo
    Colored magnetic resonance imaging scans of healthy brain of patient.
    Male hips and buttocks muscles, computer illustration. — Stock Photo
    Male hips and buttocks muscles, computer illustration.
    Closeup view of one baked Empanada on white tissue — Stock Photo
    Closeup view of one baked Empanada on white tissue
    Male basketball player muscles while running with ball, computer illustration. — Stock Photo
    Male basketball player muscles while running with ball, computer illustration.
    Tumour growth, computer illustration — Stock Photo
    Tumour growth, computer illustration
    Herring with onions and gherkins in bread roll — Stock Photo
    Herring with onions and gherkins in bread roll
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail. — Stock Photo
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail.
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    Nerve cell structure in cross section on white background, digital illustration. — Stock Photo
    Nerve cell structure in cross section on white background, digital illustration.
    Abstract biopolymer structure, conceptual illustration. — Stock Photo
    Abstract biopolymer structure, conceptual illustration.
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Tapeworm cysts in the brain — Stock Photo
    Tapeworm cysts in the brain
    Hot dog with ketchup on plate — Stock Photo
    Hot dog with ketchup on plate
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain. — Stock Photo
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain.
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes).
    Human smooth muscle, light micrograph. — Stock Photo
    Human smooth muscle, light micrograph.
    Slice of pepperoni pizza — Stock Photo
    Slice of pepperoni pizza
    Prostate showing a concretion of secretory materials — Stock Photo
    Prostate showing a concretion of secretory materials
    Closeup view of date fingers with pistachios — Stock Photo
    Closeup view of date fingers with pistachios
    Physical therapist massaging man and applying massage oil. — Stock Photo
    Physical therapist massaging man and applying massage oil.
    Human rib cage showing heart with vessels and bronchial tree on white background. — Stock Photo
    Human rib cage showing heart with vessels and bronchial tree on white background.
    Adipose tissue composed of adipocytes — Stock Photo
    Adipose tissue composed of adipocytes
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Rhomboid muscles in human back bones, computer illustration. — Stock Photo
    Rhomboid muscles in human back bones, computer illustration.