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    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Illustration of pink stem cell on black background. — Stock Photo
    Illustration of pink stem cell on black background.
    Young female scientist viewing microscope during research. — Stock Photo
    Young female scientist viewing microscope during research.
    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)
    Bright halloween pumpkins in dark forest — Stock Photo
    Bright halloween pumpkins in dark forest
    Female scientist holding multi-well plate with growth medium. — Stock Photo
    Female scientist holding multi-well plate with growth medium.
    Orange Cocktail in Stem Glass — Stock Photo
    Orange Cocktail in Stem Glass
    Curious students conducting scientific experiment, watching liquid in vial in laboratory classroom — Stock Photo
    Curious students conducting scientific experiment, watching liquid in vial in laboratory classroom
    Cute boy and girl drawing at home — Stock Photo
    Cute boy and girl drawing at home
    Dumpy tree frog on a plant, Indonesia — Stock Photo
    Dumpy tree frog on a plant, Indonesia
    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
    Close-up of delicate white blossom of Snakes Head Fritillary on meadow. — Stock Photo
    Close-up of delicate white blossom of Snakes Head Fritillary on meadow.
    Field of green grass growing near dry mud, Villafafila — Stock Photo
    Field of green grass growing near dry mud, Villafafila
    Illustration of pink stem cell on blue background. — Stock Photo
    Illustration of pink stem cell on blue background.
    Wooden box with kitchen utensils and a linen napkin — Stock Photo
    Wooden box with kitchen utensils and a linen napkin
    Tropical jungle Monstera leaf — Stock Photo
    Tropical jungle Monstera leaf
    Glass of alcoholic drink and ice on white background with purple lily petal — Stock Photo
    Glass of alcoholic drink and ice on white background with purple lily petal
    Closeup green tomatoes ripening with raindrops on branches of plant growing in agricultural field in countryside — Stock Photo
    Closeup green tomatoes ripening with raindrops on branches of plant growing in agricultural field in countryside
    Coconuts growing on stem — Stock Photo
    Coconuts growing on stem
    Smiling male science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling male science teacher leading lesson at whiteboard in classroom
    Closeup of delicate soft white stamen — Stock Photo
    Closeup of delicate soft white stamen
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    From above of ripe red and unripe cherry tomatoes collected in farm during harvest season — Stock Photo
    From above of ripe red and unripe cherry tomatoes collected in farm during harvest season
    From above of festive Christmas bouquet with branches of cotton, fir and twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room — Stock Photo
    From above of festive Christmas bouquet with branches of cotton, fir and twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room
    Close-up of land snail on wild plant stem. — Stock Photo
    Close-up of land snail on wild plant stem.
    Close-up of a bug on a plant, Indonesia — Stock Photo
    Close-up of a bug on a plant, Indonesia
    Eucalyptus stems with gift tags, string and scissors — Stock Photo
    Eucalyptus stems with gift tags, string and scissors
    Positive child with dirty gardening shovel looking at camera against bag with tropical plant in countryside — Stock Photo
    Positive child with dirty gardening shovel looking at camera against bag with tropical plant in countryside
    Milk cap mushroom growing in woods covered with fallen dry foliage in autumn day — Stock Photo
    Milk cap mushroom growing in woods covered with fallen dry foliage in autumn day
    Fennel wine in stemmed glasses — Stock Photo
    Fennel wine in stemmed glasses
    Western sword fern — Stock Photo
    Western sword fern
    Junior high boy students using computer in computer lab — Stock Photo
    Junior high boy students using computer in computer lab
    Woman standing in a garden holding a dahlia flower, Serbia — Stock Photo
    Woman standing in a garden holding a dahlia flower, Serbia
    Crop male hand holding bunch of garlic against table — Stock Photo
    Crop male hand holding bunch of garlic against table
    Young attractive woman with fresh flower looking away and resting on bed in bedroom — Stock Photo
    Young attractive woman with fresh flower looking away and resting on bed in bedroom
    Close-up of picture-winged fly sitting on wild plant stem. — Stock Photo
    Close-up of picture-winged fly sitting on wild plant stem.
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Cold orange juice — Stock Photo
    Cold orange juice
    Blond Girl Holding Paper Parachute Smiling Near Cement Brick Wall — Stock Photo
    Blond Girl Holding Paper Parachute Smiling Near Cement Brick Wall
    Eager, smiling students raising hands in science laboratory classroom — Stock Photo
    Eager, smiling students raising hands in science laboratory classroom
    Kameyama bamboo forest; Kyoto, Kansai, Japan — Stock Photo
    Kameyama bamboo forest; Kyoto, Kansai, Japan
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Empty white frame hanging on bright dyed green exotic plants in daylight — Stock Photo
    Empty white frame hanging on bright dyed green exotic plants in daylight
    Science teacher assembling molecule model in laboratory classroom — Stock Photo
    Science teacher assembling molecule model in laboratory classroom
    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.
    Closeup view of orange Nasturtium flower on white surface — Stock Photo
    Closeup view of orange Nasturtium flower on white surface
    Student in wheelchair beside furnace fuel flow controls in HVAC classroom — Stock Photo
    Student in wheelchair beside furnace fuel flow controls in HVAC classroom
    Close-up of orange knee sawfly beetle on plant stem. — Stock Photo
    Close-up of orange knee sawfly beetle on plant stem.
    Top view of heap of whole small green apples with leaves in basket on wooden surface — Stock Photo
    Top view of heap of whole small green apples with leaves in basket on wooden surface
    Woman with secateurs working in garden — Stock Photo
    Woman with secateurs working in garden
    Shrimp Cocktail in Glass — Stock Photo
    Shrimp Cocktail in Glass
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Junior high students and teachers using computers in computer lab — Stock Photo
    Junior high students and teachers using computers in computer lab
    Scenery of hill covered with snow and bare shrubs growing in winter nature under cloudless blue sky — Stock Photo
    Scenery of hill covered with snow and bare shrubs growing in winter nature under cloudless blue sky
    From above view of uncooked meat piece near bowls with Himalayan salt near olive oil and ground black pepper against rosemary sprig on wooden surface — Stock Photo
    From above view of uncooked meat piece near bowls with Himalayan salt near olive oil and ground black pepper against rosemary sprig on wooden surface
    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)
    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
    Robberfly with its grasshopper prey, Indonesia — Stock Photo
    Robberfly with its grasshopper prey, Indonesia
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.