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    Female researcher using light microscope for examining stem cells in culture jar. — Stock Photo
    Female researcher using light microscope for examining stem cells in culture jar.
    Digital illustration of human cells on blue background. — Stock Photo
    Digital illustration of human cells on blue background.
    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 freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow).
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Student in wheelchair setting up generator experiment while student examines HVAC system — Stock Photo
    Student in wheelchair setting up generator experiment while student examines HVAC system
    A gardener holding a sieve with fresh chard — Stock Photo
    A gardener holding a sieve with fresh chard
    Female science teacher and students in laboratory classroom — Stock Photo
    Female science teacher and students in laboratory classroom
    Closeup of dry grass and wheat spikelets growing in field in countryside during golden hour — Stock Photo
    Closeup of dry grass and wheat spikelets growing in field in countryside during golden hour
    Various pot plants on wooden table — Stock Photo
    Various pot plants on wooden table
    Female scientist in clean suit with test tubes studying coronavirus — Stock Photo
    Female scientist in clean suit with test tubes studying coronavirus
    Close up of small gray lizard looking out of trunk in the forest — Stock Photo
    Close up of small gray lizard looking out of trunk in the forest
    Focused male engineer with screwdriver fixing robotic arm — Stock Photo
    Focused male engineer with screwdriver fixing robotic arm
    Tropical jungle Monstera leaf — Stock Photo
    Tropical jungle Monstera leaf
    Close up of tiger lily flowers in a garden, England, United Kingdom — Stock Photo
    Close up of tiger lily flowers in a garden, England, United Kingdom
    Focused female engineer with screwdriver fixing robotic arm — Stock Photo
    Focused female engineer with screwdriver fixing robotic arm
    Junior high students working at computers in computer lab — Stock Photo
    Junior high students working at computers in computer lab
    Close up of purple alium flower — Stock Photo
    Close up of purple alium flower
    Through glass side view of young female in dress sitting in hothouse with green plants — Stock Photo
    Through glass side view of young female in dress sitting in hothouse with green plants
    Back view thoughtful bearded male with naked torso holding small twig of oak tree branch against white wall — Stock Photo
    Back view thoughtful bearded male with naked torso holding small twig of oak tree branch against white wall
    Boy looking into microscope with girl looking on — Stock Photo
    Boy looking into microscope with girl looking on
    Green seedling of houseplant placed in glass bottle with water on wooden shelf near white wall in kitchen — Stock Photo
    Green seedling of houseplant placed in glass bottle with water on wooden shelf near white wall in kitchen
    Close-up of Butterfly sitting on a plant stem — Stock Photo
    Close-up of Butterfly sitting on a plant stem
    Various flowers bouquet on window sill in sunlight. — Stock Photo
    Various flowers bouquet on window sill in sunlight.
    Close up scientist in rubber gloves holding specimen tray — Stock Photo
    Close up scientist in rubber gloves holding specimen tray
    From above of crop happy ethnic young female florist in apron smiling and cutting wrapping paper while arranging elegant bouquet of fresh assorted colorful flowers — Stock Photo
    From above of crop happy ethnic young female florist in apron smiling and cutting wrapping paper while arranging elegant bouquet of fresh assorted colorful flowers
    Dead tree in Big Sur — Stock Photo
    Dead tree in Big Sur
    Low angle view of champagne glasses hanging on a glass hanger in a bar — Stock Photo
    Low angle view of champagne glasses hanging on a glass hanger in a bar
    Illustration of beige stem cell on black background. — Stock Photo
    Illustration of beige stem cell on black background.
    Brown and white eggs in glass with stem — Stock Photo
    Brown and white eggs in glass with stem
    Branch of spruce with thin needles with melting snow in forest in winter day — Stock Photo
    Branch of spruce with thin needles with melting snow in forest in winter day
    An Apollo Butterfly (Parnassius Apollo) Seeking Nectar From A Daisy; Astoria, Oregon, United States Of America — Stock Photo
    An Apollo Butterfly (Parnassius Apollo) Seeking Nectar From A Daisy; Astoria, Oregon, United States Of America
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse — Stock Photo
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Close-up of a damselfly hiding behind a plant stem, Indonesia — Stock Photo
    Close-up of a damselfly hiding behind a plant stem, Indonesia
    Green and red haworthia plant with leaves and white dots in dark place — Stock Photo
    Green and red haworthia plant with leaves and white dots in dark place
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process
    Unrecognizable female with scissors cutting stems of plant with lush green foliage while sitting at table with glasses at home — Stock Photo
    Unrecognizable female with scissors cutting stems of plant with lush green foliage while sitting at table with glasses at home
    Crop person holding huge green leaf of fern against empty asphalt road among blurred dense forest with bare trees during daytime — Stock Photo
    Crop person holding huge green leaf of fern against empty asphalt road among blurred dense forest with bare trees during daytime
    A spider dangles above a flower — Stock Photo
    A spider dangles above a flower
    Rustic composition of green stem on board with rough fabric and oat grains on wooden table — Stock Photo
    Rustic composition of green stem on board with rough fabric and oat grains on wooden table
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom
    Windswept sea grass — Stock Photo
    Windswept sea grass
    Thistle bud weevil sitting on common thistle stem. — Stock Photo
    Thistle bud weevil sitting on common thistle stem.
    Science teacher assembling molecule model in laboratory classroom — Stock Photo
    Science teacher assembling molecule model in laboratory classroom
    Green frog on plant stem, close-up. — Stock Photo
    Green frog on plant stem, close-up.
    Leaves And New Growth — Stock Photo
    Leaves And New Growth
    Iris stem cellular structure — Stock Photo
    Iris stem cellular structure
    Crassula ovata succulent plant placed in pot on wooden table in light place — Stock Photo
    Crassula ovata succulent plant placed in pot on wooden table in light place
    Scientist in rubber gloves filling pipette tray in laboratory — Stock Photo
    Scientist in rubber gloves filling pipette tray in laboratory
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Close-up of a spider eating a dragonfly, Indonesia — Stock Photo
    Close-up of a spider eating a dragonfly, Indonesia
    Mid section of woman cutting stem of flower at home — Stock Photo
    Mid section of woman cutting stem of flower at home
    Girl students examining liquid in beaker, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students examining liquid in beaker, conducting scientific experiment in laboratory classroom
    Cute little girl picking vegetables — Stock Photo
    Cute little girl picking vegetables
    Human hand elegantly taking stem of ripe juicy strawberry from bowl of berries on wooden table — Stock Photo
    Human hand elegantly taking stem of ripe juicy strawberry from bowl of berries on wooden table
    High angle of transparent glass vases with bunches of fresh flowers placed on table for event — Stock Photo
    High angle of transparent glass vases with bunches of fresh flowers placed on table for event
    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.
    Woman working in a large glasshouse — Stock Photo
    Woman working in a large glasshouse
    Grapes And Bread in basket — Stock Photo
    Grapes And Bread in basket