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    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.
    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).
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Miniature snail on a plant, Indonesia — Stock Photo
    Miniature snail on a plant, Indonesia
    Campopleginae pupa covered by dew drops on stem. — Stock Photo
    Campopleginae pupa covered by dew drops on stem.
    Student examining electrical control system on furnace with professor in HVAC classroom one student in wheelchair — Stock Photo
    Student examining electrical control system on furnace with professor in HVAC classroom one student in wheelchair
    Researchers handling stem cell cultures in laboratory while drug research. — Stock Photo
    Researchers handling stem cell cultures in laboratory while drug research.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background
    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)
    Chicken Satay and glasses — Stock Photo
    Chicken Satay and glasses
    Top view of tasty fresh fig pieces with juicy pulp near aromatic thyme sprigs on crumpled surface — Stock Photo
    Top view of tasty fresh fig pieces with juicy pulp near aromatic thyme sprigs on crumpled surface
    Stem cell cultures on weighed in laboratory. — Stock Photo
    Stem cell cultures on weighed in laboratory.
    Branches in a vase on a sideboard table — Stock Photo
    Branches in a vase on a sideboard table
    Section through a lily stem — Stock Photo
    Section through a lily stem
    Crop unrecognizable young female florist in casual clothes cutting stems of fresh bright flowers with pruning snips while arranging bouquet in glass vase — Stock Photo
    Crop unrecognizable young female florist in casual clothes cutting stems of fresh bright flowers with pruning snips while arranging bouquet in glass vase
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.
    Close-up of green plant leaves along stem. — Stock Photo
    Close-up of green plant leaves along stem.
    Red vegetables on a wooden table in front of a window — Stock Photo
    Red vegetables on a wooden table in front of a window
    Windswept sea grass — Stock Photo
    Windswept sea grass
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room — Stock Photo
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room
    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 brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow). — Stock Photo
    Human brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow).
    Side view of woman smelling red rose in the garden — Stock Photo
    Side view of woman smelling red rose in the garden
    Female scientist holding tray for stem cell research. — Stock Photo
    Female scientist holding tray for stem cell research.
    Focused female engineers examining prototype — Stock Photo
    Focused female engineers examining prototype
    Junior high students at computers listening to teacher at projection screen in classroom — Stock Photo
    Junior high students at computers listening to teacher at projection screen in classroom
    Light micrograph of Dicot plants stem showing plant vascular tissue. — Stock Photo
    Light micrograph of Dicot plants stem showing plant vascular tissue.
    Green fern frond against empty road and gloomy woodland — Stock Photo
    Green fern frond against empty road and gloomy woodland
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses 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
    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
    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
    Fresh chard (seen from above) — Stock Photo
    Fresh chard (seen from above)
    Businesswomen with adhesive notes planning in office — Stock Photo
    Businesswomen with adhesive notes planning in office
    Spinach seedlings getting ready to go in the home garden — Stock Photo
    Spinach seedlings getting ready to go in the home garden
    Crop male hand holding bunch of garlic against table — Stock Photo
    Crop male hand holding bunch of garlic against table
    Chicory stem with leaves — Stock Photo
    Chicory stem with leaves
    Beautiful Nordic drink in small high stem glass sprinkled with red powder and leaf served on grey cloth with scattered dried rose petals on blurred background — Stock Photo
    Beautiful Nordic drink in small high stem glass sprinkled with red powder and leaf served on grey cloth with scattered dried rose petals on blurred background
    Students soldering circuit board in classroom — Stock Photo
    Students soldering circuit board in classroom
    Hand holding bright red leaf in autumn — Stock Photo
    Hand holding bright red leaf in autumn
    Back view of unrecognizable female with long ginger hair opening door of greenhouse with plants — Stock Photo
    Back view of unrecognizable female with long ginger hair opening door of greenhouse with plants
    Woman standing in a garden holding a dahlia flower, Serbia — Stock Photo
    Woman standing in a garden holding a dahlia flower, Serbia
    Brainstem and cerebellum structures — Stock Photo
    Brainstem and cerebellum structures
    Focused boy student assembling computer in classroom — Stock Photo
    Focused boy student assembling computer in classroom
    Green seedling of houseplant placed in glass bottle with water on wooden shelf with book near white wall in kitchen — Stock Photo
    Green seedling of houseplant placed in glass bottle with water on wooden shelf with book near white wall in kitchen
    Male teacher leading physics lesson at whiteboard in classroom — Stock Photo
    Male teacher leading physics lesson at whiteboard in classroom
    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
    Bag containing donated human blood, placenta and umbilical cord. — Stock Photo
    Bag containing donated human blood, placenta and umbilical cord.
    Medium tray with cells and DNA autoradiogram for scientific research. — Stock Photo
    Medium tray with cells and DNA autoradiogram for scientific research.
    Woman checking the plants in garden — Stock Photo
    Woman checking the plants in garden
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    Computer programmers programming virtual reality simulator glasses at computer in office — Stock Photo
    Computer programmers programming virtual reality simulator glasses at computer in office
    Dumpy tree frog on a plant, Indonesia — Stock Photo
    Dumpy tree frog on a plant, Indonesia
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table in room — Stock Photo
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table in room
    Shiny ripe red cherries on black background — Stock Photo
    Shiny ripe red cherries on black background
    Stem cell cultures on weighed in laboratory. — Stock Photo
    Stem cell cultures on weighed in laboratory.
    Medical illustration of the human nervous system and brain — Stock Photo
    Medical illustration of the human nervous system and brain
    Attentive woman checking plant — Stock Photo
    Attentive woman checking plant
    Peony flower (Paeonia officinalis), X-ray. — Stock Photo
    Peony flower (Paeonia officinalis), X-ray.