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    Scientist holding multi-well plate with growth medium. — Stock Photo
    Scientist holding multi-well plate with growth medium.
    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).
    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)
    Young pine tree stem — Stock Photo
    Young pine tree stem
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Scientist preparing cells in multiwell plate. — Stock Photo
    Scientist preparing cells in multiwell plate.
    Science teacher helping girl student at microscope in classroom laboratory — Stock Photo
    Science teacher helping girl student at microscope in classroom laboratory
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background — Stock Photo
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background
    Purple lily flower — Stock Photo
    Purple lily flower
    A Single Whole Tomatillo with a Stem with green blurred background — Stock Photo
    A Single Whole Tomatillo with a Stem with green blurred background
    Spiny plant stem in glass bottle — Stock Photo
    Spiny plant stem in glass bottle
    Flower of Scabiosa plant on white background. — Stock Photo
    Flower of Scabiosa plant on white background.
    Computer programmers programming virtual reality simulator glasses at computer in office — Stock Photo
    Computer programmers programming virtual reality simulator glasses at computer in office
    Young sensual female in black clothes with blossoming flower looking at camera — Stock Photo
    Young sensual female in black clothes with blossoming flower looking at camera
    Scientist holding multi-well plate with growth medium. — Stock Photo
    Scientist holding multi-well plate with growth medium.
    Clematis armandii tea — Stock Photo
    Clematis armandii tea
    Close-up of peaches on peach tree in garden — Stock Photo
    Close-up of peaches on peach tree in garden
    Close up scientist using pipette under fume hood in laboratory — Stock Photo
    Close up scientist using pipette under fume hood in laboratory
    Adult female traveler with lush green plant leaf looking at camera during trip in woods — Stock Photo
    Adult female traveler with lush green plant leaf looking at camera during trip in woods
    Thistle bud weevil sitting on common thistle stem. — Stock Photo
    Thistle bud weevil sitting on common thistle stem.
    Top view of stem with pink orchids on glass dish — Stock Photo
    Top view of stem with pink orchids on glass dish
    Pink buds of flower — Stock Photo
    Pink buds of flower
    Top view of bunch of whole raw carrots with stems and leaves on wooden surface — Stock Photo
    Top view of bunch of whole raw carrots with stems and leaves on wooden surface
    Portrait confident male engineer planning at whiteboard in office — Stock Photo
    Portrait confident male engineer planning at whiteboard in office
    Human embryonic stem cells in Petri dish, digital illustration. — Stock Photo
    Human embryonic stem cells in Petri dish, digital illustration.
    Simple wildflower bouquet in glass jar on sunny cafe table — Stock Photo
    Simple wildflower bouquet in glass jar on sunny cafe table
    Back view full body of anonymous female with raised hand carrying wicker basket between blooming trees in garden — Stock Photo
    Back view full body of anonymous female with raised hand carrying wicker basket between blooming trees in garden
    Empty white frame hanging on bright dyed green and purple exotic plants in daylight — Stock Photo
    Empty white frame hanging on bright dyed green and purple exotic plants in daylight
    Stack of ceramic plates and bowls with eucalyptus stems — Stock Photo
    Stack of ceramic plates and bowls with eucalyptus stems
    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
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda — Stock Photo
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda
    Sunlit drop of water on stem — Stock Photo
    Sunlit drop of water on stem
    Abstract background of growing green cactus covered with even rows of sharp prickles — Stock Photo
    Abstract background of growing green cactus covered with even rows of sharp prickles
    Girl in a field holding a sunflower — Stock Photo
    Girl in a field holding a sunflower
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium. — Stock Photo
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium.
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom
    Active brain visualization — Stock Photo
    Active brain visualization
    From above of broken small green succulent plant placed on wooden table — Stock Photo
    From above of broken small green succulent plant placed on wooden table
    Technician checking stem cell cultures in bioengineering laboratory. — Stock Photo
    Technician checking stem cell cultures in bioengineering laboratory.
    Kale, Rainbow Chard, Chard — Stock Photo
    Kale, Rainbow Chard, Chard
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Human hand touching leafless branch — Stock Photo
    Human hand touching leafless branch
    Student with Spinal Meningitis in wheelchair studying acceleration on a frictionless table in laboratory — Stock Photo
    Student with Spinal Meningitis in wheelchair studying acceleration on a frictionless table in laboratory
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom — Stock Photo
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom
    Rosemary leaves close-up view — Stock Photo
    Rosemary leaves close-up view
    Close-up of Idas blue butterfly on arc shaped stem. — Stock Photo
    Close-up of Idas blue butterfly on arc shaped stem.
    Closeup view of Mexican style shrimp cocktail in glass stem bowl — Stock Photo
    Closeup view of Mexican style shrimp cocktail in glass stem bowl
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Computer programmers testing virtual reality simulator glasses at computer in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses at computer in office
    Cinderella Pumpkin with Long Stem — Stock Photo
    Cinderella Pumpkin with Long Stem
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Closeup of fern stem on blurred background — Stock Photo
    Closeup of fern stem on blurred background
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Close up scientist in rubber gloves using pipette to fill tray — Stock Photo
    Close up scientist in rubber gloves using pipette to fill tray
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA — Stock Photo
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA
    Curious boy examining DNA model in classroom — Stock Photo
    Curious boy examining DNA model in classroom
    Woman standing in a garden holding a dahlia flower, Serbia — Stock Photo
    Woman standing in a garden holding a dahlia flower, Serbia
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves — Stock Photo
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves
    Meadow with dry plants — Stock Photo
    Meadow with dry plants