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    Agronomy technician pouring water in soil samples. — Stock Photo
    Agronomy technician pouring water in soil samples.
    Close up of male student practicing experiment in lab — Stock Photo
    Close up of male student practicing experiment in lab
    Girl holding test tubes with chemicals — Stock Photo
    Girl holding test tubes with chemicals
    Skeletal system and internal organs — Stock Photo
    Skeletal system and internal organs
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    Illustration of illuminated red cancer cell on black background. — Stock Photo
    Illustration of illuminated red cancer cell on black background.
    Structural anatomy of adult human — Stock Photo
    Structural anatomy of adult human
    Female teacher and students watching scientific experiment chemical reaction in laboratory classroom — Stock Photo
    Female teacher and students watching scientific experiment chemical reaction in laboratory classroom
    Healthy ankle joint — Stock Photo
    Healthy ankle joint
    Entamoeba histolytica engulfing red blood cells — Stock Photo
    Entamoeba histolytica engulfing red blood cells
    Boy and girl on a science lesson — Stock Photo
    Boy and girl on a science lesson
    Side view of crop anonymous male medic in uniform and mask using microscope while working in lab — Stock Photo
    Side view of crop anonymous male medic in uniform and mask using microscope while working in lab
    Close-up of blood sample in glass phial. — Stock Photo
    Close-up of blood sample in glass phial.
    3d illustration of variety of different pollen grains. — Stock Photo
    3d illustration of variety of different pollen grains.
    Male human flea — Stock Photo
    Male human flea
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Side view crop concentrated male scientist in lab coat and mask holding hands in biosafety cabinet while working with contaminated materials — Stock Photo
    Side view crop concentrated male scientist in lab coat and mask holding hands in biosafety cabinet while working with contaminated materials
    Magnified digital illustration of mitochondrion cell. — Stock Photo
    Magnified digital illustration of mitochondrion cell.
    Tick biting skin — Stock Photo
    Tick biting skin
    Close-up of multipipette sampling liquid into tube rack in laboratory. — Stock Photo
    Close-up of multipipette sampling liquid into tube rack in laboratory.
    Quartz cuvettes containing red liquid. — Stock Photo
    Quartz cuvettes containing red liquid.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    View of Fetus at 26 weeks — Stock Photo
    View of Fetus at 26 weeks
    Medium tray with cells and DNA autoradiogram for scientific research. — Stock Photo
    Medium tray with cells and DNA autoradiogram for scientific research.
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Scientist checking a solution in conical flask at lab — Stock Photo
    Scientist checking a solution in conical flask at lab
    Blood stream and artery walls — Stock Photo
    Blood stream and artery walls
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Portrait of teenage girl with arms crossed standing by desk in lab — Stock Photo
    Portrait of teenage girl with arms crossed standing by desk in lab
    Genetic research tube containing DNA sample with DNA profile in background. — Stock Photo
    Genetic research tube containing DNA sample with DNA profile in background.
    Portrait smiling college students in science lab coats — Stock Photo
    Portrait smiling college students in science lab coats
    Activated platelets in blood vessel — Stock Photo
    Activated platelets in blood vessel
    Computer artwork of small dark nebula Bok globule. — Stock Photo
    Computer artwork of small dark nebula Bok globule.
    Illustration of blue cancer cell on blue background. — Stock Photo
    Illustration of blue cancer cell on blue background.
    Red blood cells — Stock Photo
    Red blood cells
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Close up of pipette dropping solution into test tubes in rack in lab — Stock Photo
    Close up of pipette dropping solution into test tubes in rack in lab
    Close-up of plant seedling in soil in Petri dish in laboratory. — Stock Photo
    Close-up of plant seedling in soil in Petri dish in laboratory.
    Giant Polytene chromosomes — Stock Photo
    Giant Polytene chromosomes
    Attentive male scientist experimenting in laboratory — Stock Photo
    Attentive male scientist experimenting in laboratory
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage.
    Heart anatomy and major vessels — Stock Photo
    Heart anatomy and major vessels
    Boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Boy student using microscope, conducting scientific experiment in laboratory classroom
    Female scientist taking testing tube from tray for scientific research. — Stock Photo
    Female scientist taking testing tube from tray for scientific research.
    Mixed seeds on spoon, studio shot. — Stock Photo
    Mixed seeds on spoon, studio shot.
    Mucor fungus on black background, digital illustration. — Stock Photo
    Mucor fungus on black background, digital illustration.
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria. — Stock Photo
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria.
    View of fetus at 7 weeks — Stock Photo
    View of fetus at 7 weeks
    Human anatomical structure — Stock Photo
    Human anatomical structure
    Digital illustration of virus particles on black background. — Stock Photo
    Digital illustration of virus particles on black background.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Cancer cell, scientific digital illustration. — Stock Photo
    Cancer cell, scientific digital illustration.
    Simple columnar epithelium, digital illustration. — Stock Photo
    Simple columnar epithelium, digital illustration.
    Mosquito head anatomy — Stock Photo
    Mosquito head anatomy
    Doctors hands making a research in laboratory — Stock Photo
    Doctors hands making a research in laboratory
    Illustration of view of Pluto seen from surface of moon Charon. — Stock Photo
    Illustration of view of Pluto seen from surface of moon Charon.
    Crop anonymous chemist pouring marijuana oil from pipette into sample tube during examination in laboratory — Stock Photo
    Crop anonymous chemist pouring marijuana oil from pipette into sample tube during examination in laboratory
    Parasitic head louse on human hair — Stock Photo
    Parasitic head louse on human hair
    View of Fetus at 7 weeks — Stock Photo
    View of Fetus at 7 weeks