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    Cropped image of Carpenter spraying solution on sharpening stone — Stock Photo
    Cropped image of Carpenter spraying solution on sharpening stone
    Schoolboy solving a problem on a blackboard. — Stock Photo
    Schoolboy solving a problem on a blackboard.
    From above of plastic blister packs with blue medical capsules placed on yellow and green and blue background — Stock Photo
    From above of plastic blister packs with blue medical capsules placed on yellow and green and blue background
    Young and Pretty Hippie on a Deserted Road — Stock Photo
    Young and Pretty Hippie on a Deserted Road
    Children hug each other in class affectionately with a blackboard in t — Stock Photo
    Children hug each other in class affectionately with a blackboard in t
    Rear view of male scientist experimenting in laboratory — Stock Photo
    Rear view of male scientist experimenting in laboratory
    Close-up of scientist using pipette in laboratory — Stock Photo
    Close-up of scientist using pipette in laboratory
    Hands connecting two pieces of cell phone — Stock Photo
    Hands connecting two pieces of cell phone
    Close-up of female scientist using pipette in laboratory — Stock Photo
    Close-up of female scientist using pipette in laboratory
    Group of students and a teacher — Stock Photo
    Group of students and a teacher
    Female doctor applying neck support to young girl. — Stock Photo
    Female doctor applying neck support to young girl.
    Female scientist examining test tube in laboratory — Stock Photo
    Female scientist examining test tube in laboratory
    Thinker statue with energy-saving light bulb above his head — Stock Photo
    Thinker statue with energy-saving light bulb above his head
    Boy standing at a podium — Stock Photo
    Boy standing at a podium
    High angle of contents of medical drug poured out of blue colored capsule on yellow background — Stock Photo
    High angle of contents of medical drug poured out of blue colored capsule on yellow background
    Boy looking at a clear seethrough board — Stock Photo
    Boy looking at a clear seethrough board
    Pensive surgeon in uniform checking patient and making decision while coworker having consultation with colleagues during surgery in operating room of contemporary hospital — Stock Photo
    Pensive surgeon in uniform checking patient and making decision while coworker having consultation with colleagues during surgery in operating room of contemporary hospital
    Close-up of male scientist writing on clipboard in laboratory — Stock Photo
    Close-up of male scientist writing on clipboard in laboratory
    Boy in a library reading a book. — Stock Photo
    Boy in a library reading a book.
    Male scientists experimenting together in laboratory — Stock Photo
    Male scientists experimenting together in laboratory
    Students on a science lesson — Stock Photo
    Students on a science lesson
    Researchers hand mixing solution — Stock Photo
    Researchers hand mixing solution
    Schoolboy solving mathematics — Stock Photo
    Schoolboy solving mathematics
    Senior woman in glasses reading prescription — Stock Photo
    Senior woman in glasses reading prescription
    Young teenager boy with a couple of light bulbs in front of his eyes innovation and imagination concept — Stock Photo
    Young teenager boy with a couple of light bulbs in front of his eyes innovation and imagination concept
    Team of scientists experimenting together in laboratory — Stock Photo
    Team of scientists experimenting together in laboratory
    Laboratory technician holding test tubes in blood bank — Stock Photo
    Laboratory technician holding test tubes in blood bank
    Scientists checking a solution in bottle in lab — Stock Photo
    Scientists checking a solution in bottle in lab
    School in Village of Himba tribe — Stock Photo
    School in Village of Himba tribe
    Open laptop and scientific samples on table — Stock Photo
    Open laptop and scientific samples on table
    Close-up of female scientist experimenting in laboratory — Stock Photo
    Close-up of female scientist experimenting in laboratory
    Water filling clear light bulb — Stock Photo
    Water filling clear light bulb
    Girl with a suitcase. Young and Pretty Hippie on a Deserted Road — Stock Photo
    Girl with a suitcase. Young and Pretty Hippie on a Deserted Road
    Businessmen discussion while holding book — Stock Photo
    Businessmen discussion while holding book
    Mid section of scientists doing experiment in lab — Stock Photo
    Mid section of scientists doing experiment in lab
    Attentive university student doing a chemical experiment in laboratory — Stock Photo
    Attentive university student doing a chemical experiment in laboratory
    College students experimenting chemical in laboratory at university — Stock Photo
    College students experimenting chemical in laboratory at university
    Boy in a school library — Stock Photo
    Boy in a school library
    Woman with baby girl — Stock Photo
    Woman with baby girl
    Emergency fire fighting helicopter with water bucket in Cape Town, South Africa. — Stock Photo
    Emergency fire fighting helicopter with water bucket in Cape Town, South Africa.
    Saline solution drip for animal patient hanging on metal pole in operating room of veterinary clinic — Stock Photo
    Saline solution drip for animal patient hanging on metal pole in operating room of veterinary clinic
    Mid adult businessman writing on glass — Stock Photo
    Mid adult businessman writing on glass
    Laboratory technician holding test tubes in blood bank — Stock Photo
    Laboratory technician holding test tubes in blood bank
    Man pouring pills on palm from bottle, close-up. — Stock Photo
    Man pouring pills on palm from bottle, close-up.
    Female surgeon examining a horse in operation theatre at hospital — Stock Photo
    Female surgeon examining a horse in operation theatre at hospital
    Male scientist placing chemical tube glass bottle on a machine in laboratory — Stock Photo
    Male scientist placing chemical tube glass bottle on a machine in laboratory
    Adult bearded man in glasses thinking and looking at camera while standing near car and holding cardboard boxes in evening — Stock Photo
    Adult bearded man in glasses thinking and looking at camera while standing near car and holding cardboard boxes in evening
    Young teenager boy with a couple of light bulbs in front of his eyes innovation and imagination concept — Stock Photo
    Young teenager boy with a couple of light bulbs in front of his eyes innovation and imagination concept
    Girls and boys in Science Club — Stock Photo
    Girls and boys in Science Club
    Boy looking up at a display of the planets — Stock Photo
    Boy looking up at a display of the planets
    Close-up of horse receiving an intravenous therapy in hospital — Stock Photo
    Close-up of horse receiving an intravenous therapy in hospital
    School in Grashoek village — Stock Photo
    School in Grashoek village
    Scientist pipetting solution into the glass test tube at lab — Stock Photo
    Scientist pipetting solution into the glass test tube at lab
    Teacher in School of Maasai tribe — Stock Photo
    Teacher in School of Maasai tribe
    Conical flask glassware with solution on table in science laboratory — Stock Photo
    Conical flask glassware with solution on table in science laboratory
    Creative business people stacking green blocks — Stock Photo
    Creative business people stacking green blocks
    Radiologist holding solution bottle in radiology room. — Stock Photo
    Radiologist holding solution bottle in radiology room.
    High angle of blue capsule of pharmaceutical medicinal product placed on bright yellow background — Stock Photo
    High angle of blue capsule of pharmaceutical medicinal product placed on bright yellow background
    Mid adult businessman using digital tablet — Stock Photo
    Mid adult businessman using digital tablet
    Student writing formula and equations — Stock Photo
    Student writing formula and equations