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    Parotid salivary gland — Stock Photo
    Parotid salivary gland
    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)
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    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.
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    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
    Abstract view of plant tissue in light micrograph. — Stock Photo
    Abstract view of plant tissue in light micrograph.
    Person holding blood bag — Stock Photo
    Person holding blood bag
    Abstract human immunodeficiency virus structure, scientific digital illustration. — Stock Photo
    Abstract human immunodeficiency virus structure, scientific digital illustration.
    Cropped image of sportsman standing with crossed hands near fence at sports ground — Stock Photo
    Cropped image of sportsman standing with crossed hands near fence at sports ground
    Woman holding hands behind back — Stock Photo
    Woman holding hands behind back
    Two people on the rocks — Stock Photo
    Two people on the rocks
    Mid-section of woman using a laptop at home — Stock Photo
    Mid-section of woman using a laptop at home
    Children playing with soccer ball on cobblestone street — Stock Photo
    Children playing with soccer ball on cobblestone street
    Infected bronchus with mucus — Stock Photo
    Infected bronchus with mucus
    Mid section of male scientist experimenting in laboratory — Stock Photo
    Mid section of male scientist experimenting in laboratory
    Woman using laptop in garden lawn chair — Stock Photo
    Woman using laptop in garden lawn chair
    Light micrograph of onion (Allium cepa) root tip cells undergoing mitosis (nuclear division). — Stock Photo
    Light micrograph of onion (Allium cepa) root tip cells undergoing mitosis (nuclear division).
    Elevated low section of woman sitting in a red armchair in her living room using a smartphone, with her legs crossed — Stock Photo
    Elevated low section of woman sitting in a red armchair in her living room using a smartphone, with her legs crossed
    Front view mid section of a fashionable young mixed race transgender adult in the street, talking on the smartphone and holding a skateboard — Stock Photo
    Front view mid section of a fashionable young mixed race transgender adult in the street, talking on the smartphone and holding a skateboard
    Chef preparing food in mixing bowl — Stock Photo
    Chef preparing food in mixing bowl
    Woman carrying apricots in her blouse, Serbia — Stock Photo
    Woman carrying apricots in her blouse, Serbia
    Front view mid section of male fashion student working on a design in a studio at fashion college — Stock Photo
    Front view mid section of male fashion student working on a design in a studio at fashion college
    Low section of businessman standing in office — Stock Photo
    Low section of businessman standing in office
    Conceptual computer illustration of human brain structure shown in cross-section — Stock Photo
    Conceptual computer illustration of human brain structure shown in cross-section
    Chest and core musculature — Stock Photo
    Chest and core musculature
    Mid section of female shopkeeper holding tray of turkish sweets at counter in shop — Stock Photo
    Mid section of female shopkeeper holding tray of turkish sweets at counter in shop
    Mid section of twins siblings using mobile phone on a sidewalk — Stock Photo
    Mid section of twins siblings using mobile phone on a sidewalk
    Students and teacher sitting outdoors — Stock Photo
    Students and teacher sitting outdoors
    Comparison of different sized kidney stones in the human kidney — Stock Photo
    Comparison of different sized kidney stones in the human kidney
    Mid section of business people using invisible digital tablets in meeting — Stock Photo
    Mid section of business people using invisible digital tablets in meeting
    Mid section of woman spending time at home, working, using her laptop. Lifestyle at home isolating, social distancing in quarantine lockdown during coronavirus covid 19 pandemic. — Stock Photo
    Mid section of woman spending time at home, working, using her laptop. Lifestyle at home isolating, social distancing in quarantine lockdown during coronavirus covid 19 pandemic.
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown) — Stock Photo
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown)
    Mid section of a senior retired African American couple sitting at a table in their dining room drinking coffee, looking at paperwork and discussing their finances, at home together isolating during coronavirus covid19 pandemic — Stock Photo
    Mid section of a senior retired African American couple sitting at a table in their dining room drinking coffee, looking at paperwork and discussing their finances, at home together isolating during coronavirus covid19 pandemic
    Mid section of couple dancing in cafe — Stock Photo
    Mid section of couple dancing in cafe
    Mid section of female executive using smartwatch in office — Stock Photo
    Mid section of female executive using smartwatch in office
    Low section of female skateboarder standing with skateboard — Stock Photo
    Low section of female skateboarder standing with skateboard
    Mid section of man cleaning snow from car windshield during winter — Stock Photo
    Mid section of man cleaning snow from car windshield during winter
    Mother tying shoelace — Stock Photo
    Mother tying shoelace
    Human heart in cross-section with blood vessels on white background. — Stock Photo
    Human heart in cross-section with blood vessels on white background.
    Mid section of twins siblings using digital tablet in the bus — Stock Photo
    Mid section of twins siblings using digital tablet in the bus
    Mid section of woman spending time at home, wearing a pink dress, cleaning her smartphone. Social distancing and self isolation in quarantine lockdown. — Stock Photo
    Mid section of woman spending time at home, wearing a pink dress, cleaning her smartphone. Social distancing and self isolation in quarantine lockdown.
    Localisation of back pain in spinal section — Stock Photo
    Localisation of back pain in spinal section
    Girl holding pebble — Stock Photo
    Girl holding pebble
    Mid section of caucasian disabled man showing his vaccinated shoulder at home. vaccination for prevention of coronavirus outbreak concept — Stock Photo
    Mid section of caucasian disabled man showing his vaccinated shoulder at home. vaccination for prevention of coronavirus outbreak concept
    Mid section businessman using mobile phone in city — Stock Photo
    Mid section businessman using mobile phone in city
    Mid section of male carpenter with tool belt holding wrench — Stock Photo
    Mid section of male carpenter with tool belt holding wrench
    Nerve cell structure in cross section on black background, digital illustration. — Stock Photo
    Nerve cell structure in cross section on black background, digital illustration.
    Mid section of woman charging electric car at charging station — Stock Photo
    Mid section of woman charging electric car at charging station
    Back pain localisation in spinal section — Stock Photo
    Back pain localisation in spinal section
    Low section of couple holding hands near river — Stock Photo
    Low section of couple holding hands near river
    Mid section of female worker checking distillery tank in factory — Stock Photo
    Mid section of female worker checking distillery tank in factory
    Mid section of female boxer exercising on machine — Stock Photo
    Mid section of female boxer exercising on machine
    Brother and sister hugging — Stock Photo
    Brother and sister hugging
    Mid section of father and daughter using digital tablet in living room at home — Stock Photo
    Mid section of father and daughter using digital tablet in living room at home
    Front view mid section of man having a good time on a trip to the mountains, sitting by a campfire, watching the fire — Stock Photo
    Front view mid section of man having a good time on a trip to the mountains, sitting by a campfire, watching the fire
    A red running track, athletics ground, a corner section of track marked with lanes — Stock Photo
    A red running track, athletics ground, a corner section of track marked with lanes
    Low section of well dressed businessman standing on sidewalk on snowy day in the city — Stock Photo
    Low section of well dressed businessman standing on sidewalk on snowy day in the city
    Mid section of male baker preparing dough in bakery shop — Stock Photo
    Mid section of male baker preparing dough in bakery shop
    Young woman in leather boots on hood of tractor. — Stock Photo
    Young woman in leather boots on hood of tractor.