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    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.
    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)
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Colored scanning electron micrograph of human mesenchymal stem cell. — Stock Photo
    Colored scanning electron micrograph of human mesenchymal stem cell.
    Female scientist holding multi-well plate with growth medium. — Stock Photo
    Female scientist holding multi-well plate with growth medium.
    Cell-based testing kit in bioengineering laboratory. — Stock Photo
    Cell-based testing kit in bioengineering laboratory.
    Ivy stem climbing up tree trunk at autumn forest — Stock Photo
    Ivy stem climbing up tree trunk at autumn forest
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Researcher handling stem cell cultures in laboratory during research. — Stock Photo
    Researcher handling stem cell cultures in laboratory during research.
    Students conducting scientific experiment in laboratory classroom — Stock Photo
    Students conducting scientific experiment in laboratory classroom
    Pygmy marmoset holding on green stem in Ecuador, South America — Stock Photo
    Pygmy marmoset holding on green stem in Ecuador, South America
    Bottle of wine and delicate glasses with high stems standing on table with sliced tomatoes, bread, cheese and berries lying on plates with ornamental fence and plants on background — Stock Photo
    Bottle of wine and delicate glasses with high stems standing on table with sliced tomatoes, bread, cheese and berries lying on plates with ornamental fence and plants on background
    Green organic lemon — Stock Photo
    Green organic lemon
    Pieces of fresh green Aloe Vera in row on white background — Stock Photo
    Pieces of fresh green Aloe Vera in row on white background
    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
    Stem cells dividing in bone marrow, digital illustration. — Stock Photo
    Stem cells dividing in bone marrow, digital illustration.
    Laughing girl student at microscope in laboratory classroom — Stock Photo
    Laughing girl student at microscope in laboratory classroom
    Colored scanning electron micrograph of human mesenchymal stem cell. — Stock Photo
    Colored scanning electron micrograph of human mesenchymal stem cell.
    Girl student examining DNA model in classroom — Stock Photo
    Girl student examining DNA model in 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.
    Cropped image of bunch of green garlic — Stock Photo
    Cropped image of bunch of green garlic
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Technician checking stem cell cultures in bioengineering laboratory. — Stock Photo
    Technician checking stem cell cultures in bioengineering laboratory.
    Female teacher helping girl students researching at laptop at library table — Stock Photo
    Female teacher helping girl students researching at laptop at library table
    Girl student conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student conducting scientific experiment in laboratory classroom
    Female florist trimming flower stems at her flower shop — Stock Photo
    Female florist trimming flower stems at her flower shop
    Woman standing in a garden holding a dahlia flower, Serbia — Stock Photo
    Woman standing in a garden holding a dahlia flower, Serbia
    Dragonflies on a plant stem — Stock Photo
    Dragonflies on a plant stem
    Picturesque view of big meadow with red blooms and sunshine in sky — Stock Photo
    Picturesque view of big meadow with red blooms and sunshine in sky
    Scenic view of coniferous tree branch with curved stems and green needles growing in woods — Stock Photo
    Scenic view of coniferous tree branch with curved stems and green needles growing in woods
    Ice Cream Sundae with Berry Sauce — Stock Photo
    Ice Cream Sundae with Berry Sauce
    Green frog on plant stem, close-up. — Stock Photo
    Green frog on plant stem, close-up.
    Top view of various types of succulent plants placed in pots on wooden table in light place — Stock Photo
    Top view of various types of succulent plants placed in pots on wooden table in light place
    Focused boy student reading textbook at microscope in laboratory classroom — Stock Photo
    Focused boy student reading textbook at microscope in laboratory classroom
    Red Wine Pouring into a Glass — Stock Photo
    Red Wine Pouring into a Glass
    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
    Top view of green spinach foliage with veins and stems in bowl on white surface — Stock Photo
    Top view of green spinach foliage with veins and stems in bowl on white surface
    Biotechnology engineer inspecting cell culture flask. — Stock Photo
    Biotechnology engineer inspecting cell culture flask.
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Glasses of White Wine with Name Tags — Stock Photo
    Glasses of White Wine with Name Tags
    Female scientist in clean suit with test tubes studying coronavirus — Stock Photo
    Female scientist in clean suit with test tubes studying coronavirus
    Female scientist in hijab and face mask using centrifuge in laboratory — Stock Photo
    Female scientist in hijab and face mask using centrifuge in laboratory
    Close up of a tree in front of a house. — Stock Photo
    Close up of a tree in front of a house.
    Junior high students at computers watching teacher at projection screen in classroom — Stock Photo
    Junior high students at computers watching teacher at projection screen in classroom
    Top view of bowl with uncooked mushrooms and fresh green rosemary stems on on dark blue towel in arrangement with wooden spoon and fork on black table in rustic kitchen — Stock Photo
    Top view of bowl with uncooked mushrooms and fresh green rosemary stems on on dark blue towel in arrangement with wooden spoon and fork on black table in rustic kitchen
    Little boy examining bug under microscope — Stock Photo
    Little boy examining bug under microscope
    Close-up of ballet shoes and roses on stage — Stock Photo
    Close-up of ballet shoes and roses on stage
    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
    Smiling male science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling male science teacher leading lesson at whiteboard in classroom
    Tropical jungle Monstera leaf — Stock Photo
    Tropical jungle Monstera leaf
    Green leaves, flora and foliage on nature background — Stock Photo
    Green leaves, flora and foliage on nature background
    Close up of purple alium flower — Stock Photo
    Close up of purple alium flower
    Dry trees with sticking roots in mountain valley in sunny day — Stock Photo
    Dry trees with sticking roots in mountain valley in sunny day
    Closeup of fern stems in forest background — Stock Photo
    Closeup of fern stems in forest background
    Instructor demonstrating air conditioner high pressure line to student in wheelchair in HVAC classroom — Stock Photo
    Instructor demonstrating air conditioner high pressure line to student in wheelchair in HVAC classroom
    Portrait of a Wallace's flying frog on a physalis plant, Indonesia — Stock Photo
    Portrait of a Wallace's flying frog on a physalis plant, Indonesia
    Idas blue butterfly sitting on dried stem. — Stock Photo
    Idas blue butterfly sitting on dried stem.
    Curious students examining DNA model in classroom — Stock Photo
    Curious students examining DNA model in classroom
    Green plant on a corner of a table — Stock Photo
    Green plant on a corner of a table
    Computer programmers programming virtual reality simulator glasses at computer in office — Stock Photo
    Computer programmers programming virtual reality simulator glasses at computer in office