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    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Section through a lily stem — Stock Photo
    Section through a lily stem
    Female cell biologist examining flask containing stem cells cultivated in red growth medium. — Stock Photo
    Female cell biologist examining flask containing stem cells cultivated in red growth medium.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Female scientist holding tray for stem cell research. — Stock Photo
    Female scientist holding tray for stem cell research.
    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).
    Smiling male science teacher helping girl students conducting scientific experiment at microscope in laboratory — Stock Photo
    Smiling male science teacher helping girl students conducting scientific experiment at microscope in laboratory
    Bunch of rosemary stems — Stock Photo
    Bunch of rosemary stems
    Close-up of small heat butterfly hanging on dried stem. — Stock Photo
    Close-up of small heat butterfly hanging on dried stem.
    Fresh carrots with green stems and soil on stone surface — Stock Photo
    Fresh carrots with green stems and soil on stone surface
    Close-up of furrow spider on tip of wild plant stem. — Stock Photo
    Close-up of furrow spider on tip of wild plant stem.
    Easter eggs in porcelain egg cartons with eucalyptus stems — Stock Photo
    Easter eggs in porcelain egg cartons with eucalyptus stems
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Glasses filled with colorful liquids on concrete surface in bright sunlight — Stock Photo
    Glasses filled with colorful liquids on concrete surface in bright sunlight
    Swiss chard with bacon and tomato — Stock Photo
    Swiss chard with bacon and tomato
    Back view of female with wavy hair raising hands while standing near cane with green foliage — Stock Photo
    Back view of female with wavy hair raising hands while standing near cane with green foliage
    Red Wine Pouring into a Glass — Stock Photo
    Red Wine Pouring into a Glass
    Small branch on tree — Stock Photo
    Small branch on tree
    Tomato plants growing in a polytunnel. — Stock Photo
    Tomato plants growing in a polytunnel.
    From above of tender bright yellow flower on body of crop anonymous tanned person in sunlight — Stock Photo
    From above of tender bright yellow flower on body of crop anonymous tanned person in sunlight
    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
    Field harvesting on the fields — Stock Photo
    Field harvesting on the fields
    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
    Instructor discussing air conditioner recharging with student in wheelchair in HVAC classroom — Stock Photo
    Instructor discussing air conditioner recharging with student in wheelchair in HVAC classroom
    Lemon on stem with leaves — Stock Photo
    Lemon on stem with leaves
    Orange knee sawfly sitting on plant stem. — Stock Photo
    Orange knee sawfly sitting on plant stem.
    From above back view of crop anonymous female tourist swimming with wavy fabric in lake in twilight — Stock Photo
    From above back view of crop anonymous female tourist swimming with wavy fabric in lake in twilight
    Light micrograph of a cross sections of monocot stem. — Stock Photo
    Light micrograph of a cross sections of monocot stem.
    Focused female engineer repairing robotic arm — Stock Photo
    Focused female engineer repairing robotic arm
    Close-up of blossoming wildflowers in Purisim Creek Redwoods; California, United States of America — Stock Photo
    Close-up of blossoming wildflowers in Purisim Creek Redwoods; California, United States of America
    Closeup view of Citronella stems tied in a bunch on white reflective surface — Stock Photo
    Closeup view of Citronella stems tied in a bunch on white reflective surface
    Glass vases with dried plants and branches covered with leaves decorating room of home — Stock Photo
    Glass vases with dried plants and branches covered with leaves decorating room of home
    Bath salts, oil, fresh eucalyptus, sponge and towel wellbeing arrangement — Stock Photo
    Bath salts, oil, fresh eucalyptus, sponge and towel wellbeing arrangement
    Dumpy tree frog on a plant, Indonesia — Stock Photo
    Dumpy tree frog on a plant, Indonesia
    Student in wheelchair setting up HVAC experiment talking to another student — Stock Photo
    Student in wheelchair setting up HVAC experiment talking to another student
    Close-up of a bug on a plant, Indonesia — Stock Photo
    Close-up of a bug on a plant, Indonesia
    Red and white chard — Stock Photo
    Red and white chard
    Smiling female chemistry teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling female chemistry teacher and students conducting scientific experiment in laboratory classroom
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Close-up of female florist arranging flowers in a bottle at her flower shop — Stock Photo
    Close-up of female florist arranging flowers in a bottle at her flower shop
    Smiling junior high girl student using computer in computer lab — Stock Photo
    Smiling junior high girl student using computer in computer lab
    Yellow buttercup flower — Stock Photo
    Yellow buttercup flower
    Fresh clean carrots with green leafy stems. — Stock Photo
    Fresh clean carrots with green leafy stems.
    Bouquet of fresh flowers including white lilies eustoma and aster in glass vase at sunshine — Stock Photo
    Bouquet of fresh flowers including white lilies eustoma and aster in glass vase at sunshine
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.
    Hand holding wild grass stem — Stock Photo
    Hand holding wild grass stem
    Chicken Satay and glasses — Stock Photo
    Chicken Satay and glasses
    Student in wheelchair studying natural gas injector system on furnace in HVAC classroom — Stock Photo
    Student in wheelchair studying natural gas injector system on furnace in HVAC classroom
    Closeup view of wine glasses stems and bottoms — Stock Photo
    Closeup view of wine glasses stems and bottoms
    From above of fresh ripe purple onions with green stems placed on black table — Stock Photo
    From above of fresh ripe purple onions with green stems placed on black table
    Chocolate macarons in a long-stemmed glass — Stock Photo
    Chocolate macarons in a long-stemmed glass
    Sea grasses on Long Beach Peninsula — Stock Photo
    Sea grasses on Long Beach Peninsula
    Close-up of Idas blue butterfly on arc shaped stem. — Stock Photo
    Close-up of Idas blue butterfly on arc shaped stem.
    Top view of fresh broccoli sprig representing concept of healthy vegetarian food on white geometric surface — Stock Photo
    Top view of fresh broccoli sprig representing concept of healthy vegetarian food on white geometric surface
    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
    Tree fern (Dicksonia sp.), X-ray. — Stock Photo
    Tree fern (Dicksonia sp.), X-ray.
    Green blooming bushes with blossoming buds of fresh pink roses growing under evergreen thuja in botanical park — Stock Photo
    Green blooming bushes with blossoming buds of fresh pink roses growing under evergreen thuja in botanical park
    Engineers working at computer in office — Stock Photo
    Engineers working at computer in office
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda — Stock Photo
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda
    Beautiful hortensia flowers — Stock Photo
    Beautiful hortensia flowers