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    Close-up of pipetting sample into row of test tubes during experiment in laboratory. — Stock Photo
    Close-up of pipetting sample into row of test tubes during experiment in laboratory.
    Tree frog looking through a hole in a leaf, closeup view — Stock Photo
    Tree frog looking through a hole in a leaf, closeup view
    Portrait of beautiful woman holding umbrella during rainy season on street — Stock Photo
    Portrait of beautiful woman holding umbrella during rainy season on street
    A rain drop clings to two Japanese maple leaves; Astoria, Oregon, United States of America — Stock Photo
    A rain drop clings to two Japanese maple leaves; Astoria, Oregon, United States of America
    Rain drops cling to the stamens of a lily; Astoria, Oregon, United States of America — Stock Photo
    Rain drops cling to the stamens of a lily; Astoria, Oregon, United States of America
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    DNA test result on microcentrifuge tube with DNA sample in scientist hand. — Stock Photo
    DNA test result on microcentrifuge tube with DNA sample in scientist hand.
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    Close-up of dew drops on the green leaves — Stock Photo
    Close-up of dew drops on the green leaves
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    Girl looking at droplets of melted ice cream falling on dress — Stock Photo
    Girl looking at droplets of melted ice cream falling on dress
    Close up of pink razor in bathroom — Stock Photo
    Close up of pink razor in bathroom
    Aspen leaf on birch bark in autumn, close-up — Stock Photo
    Aspen leaf on birch bark in autumn, close-up
    DNA test result on microcentrifuge tube with DNA sample in scientist hand. — Stock Photo
    DNA test result on microcentrifuge tube with DNA sample in scientist hand.
    Polypodium glycyrrhiza fern leaves with raindrops, close-up — Stock Photo
    Polypodium glycyrrhiza fern leaves with raindrops, close-up
    Raindrops on Hydrangea green leaves, close-up — Stock Photo
    Raindrops on Hydrangea green leaves, close-up
    Ghost herbaceous perennial plants growing in forest — Stock Photo
    Ghost herbaceous perennial plants growing in forest
    Male college student conducting scientific experiment using pipette in science laboratory classroom — Stock Photo
    Male college student conducting scientific experiment using pipette in science laboratory classroom
    Macro shot of water drops on a peacock feather — Stock Photo
    Macro shot of water drops on a peacock feather
    Grizzly bear shaking off water in Great Bear Rainforest, British Columbia, Canada — Stock Photo
    Grizzly bear shaking off water in Great Bear Rainforest, British Columbia, Canada
    Close up of water droplets on blades of grass — Stock Photo
    Close up of water droplets on blades of grass
    Water droplets on Swiss cheese plant leaf — Stock Photo
    Water droplets on Swiss cheese plant leaf
    Close-up image of rain drops on clover leaves — Stock Photo
    Close-up image of rain drops on clover leaves
    Close-up view of fresh pear on tree — Stock Photo
    Close-up view of fresh pear on tree
    Close-up of spider web covered in morning dew — Stock Photo
    Close-up of spider web covered in morning dew
    Close up of saline dropping on contact lens — Stock Photo
    Close up of saline dropping on contact lens
    Close up of red fingernail polish dripping from bottle — Stock Photo
    Close up of red fingernail polish dripping from bottle
    Close up of pink fingernail polish dripping from bottle — Stock Photo
    Close up of pink fingernail polish dripping from bottle
    Close up of peach fingernail polish dripping from bottle — Stock Photo
    Close up of peach fingernail polish dripping from bottle
    Portrait of child with rainbow face print standing behind shower door — Stock Photo
    Portrait of child with rainbow face print standing behind shower door
    Wet lemons lying on white table, closeup — Stock Photo
    Wet lemons lying on white table, closeup
    Scientist hand holding blood drop sample on microscope slide, studio shot. — Stock Photo
    Scientist hand holding blood drop sample on microscope slide, studio shot.
    Scientist hand holding blood drop sample on microscope slide, studio shot. — Stock Photo
    Scientist hand holding blood drop sample on microscope slide, studio shot.
    Tap in bottle of water, conceptual artwork. — Stock Photo
    Tap in bottle of water, conceptual artwork.
    Scientist hand holding blood drop sample on microscope slide, studio shot. — Stock Photo
    Scientist hand holding blood drop sample on microscope slide, studio shot.
    Rain drops on green leaves, close-up. — Stock Photo
    Rain drops on green leaves, close-up.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Syringe dripping blood sample into multiwell tray. — Stock Photo
    Syringe dripping blood sample into multiwell tray.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Pipette adding sample to petri dish during experiment in laboratory. — Stock Photo
    Pipette adding sample to petri dish during experiment in laboratory.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Close-up of pipetting into Eppendorf tubes. — Stock Photo
    Close-up of pipetting into Eppendorf tubes.
    Drop of water on green leaf of plant over black — Stock Photo
    Drop of water on green leaf of plant over black
    Close-up of petri dishes and dropping pipette for genetic research. — Stock Photo
    Close-up of petri dishes and dropping pipette for genetic research.
    Sunlit drop of water on stem — Stock Photo
    Sunlit drop of water on stem
    Pipette and petri dishes for blood testing. — Stock Photo
    Pipette and petri dishes for blood testing.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Close-up of drop of red liquid pipetted into multi-well sample tray. — Stock Photo
    Close-up of drop of red liquid pipetted into multi-well sample tray.
    Close-up of drop of red liquid pipetted into multi-well sample tray. — Stock Photo
    Close-up of drop of red liquid pipetted into multi-well sample tray.
    Close-up of drop of liquid pipetted into glass bottle. — Stock Photo
    Close-up of drop of liquid pipetted into glass bottle.
    Syringe dripping blood droplet into test tubes. — Stock Photo
    Syringe dripping blood droplet into test tubes.
    A black olive with oil droplet on White background — Stock Photo
    A black olive with oil droplet on White background
    Red spot on surgical scalpel. — Stock Photo
    Red spot on surgical scalpel.
    Patient undergoing a skin prick test in allergy clinic. — Stock Photo
    Patient undergoing a skin prick test in allergy clinic.
    Pipette dripping liquid into test tubes. — Stock Photo
    Pipette dripping liquid into test tubes.
    Close-up of fresh cut pink peony flower with droplets of water — Stock Photo
    Close-up of fresh cut pink peony flower with droplets of water