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    Close-up of laboratory technician holding tube with blood sample in gloved hand. — Stock Photo
    Close-up of laboratory technician holding tube with blood sample in gloved hand.
    Female researcher pipetting liquid into test tube. — Stock Photo
    Female researcher pipetting liquid into test tube.
    Female scientist using pipette for dropping liquid into eppendorf tubes. — Stock Photo
    Female scientist using pipette for dropping liquid into eppendorf tubes.
    Preschooler boy coloring shapes with colorful pens for developmental psychology test in psychologist office. — Stock Photo
    Preschooler boy coloring shapes with colorful pens for developmental psychology test in psychologist office.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Technician holding urine sample for testing in laboratory. — Stock Photo
    Technician holding urine sample for testing in laboratory.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Cropped view of hands holding litmus paper in test-tube — Stock Photo
    Cropped view of hands holding litmus paper in test-tube
    Assorted disposable plastic pipette tips and sample tubes. — Stock Photo
    Assorted disposable plastic pipette tips and sample tubes.
    Female patient receiving a ultrasound scan on the stomach in hospital — Stock Photo
    Female patient receiving a ultrasound scan on the stomach in hospital
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    Hospital radiologist sitting at desk in front of CT scans. — Stock Photo
    Hospital radiologist sitting at desk in front of CT scans.
    Genetic research tube containing DNA sample with DNA profile in background. — Stock Photo
    Genetic research tube containing DNA sample with DNA profile in background.
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom — Stock Photo
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom
    Pipette over medical samples in box. — Stock Photo
    Pipette over medical samples in box.
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Female scientist holding medical samples in lab — Stock Photo
    Female scientist holding medical samples in lab
    Physical therapist performing skinfold test to measuring teenage boy body fat. — Stock Photo
    Physical therapist performing skinfold test to measuring teenage boy body fat.
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic — Stock Photo
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic
    Female patient going through x-ray test in hospital — Stock Photo
    Female patient going through x-ray test in hospital
    Medical sample tubes labelled with bar codes. — Stock Photo
    Medical sample tubes labelled with bar codes.
    Curious boy using pipette in beaker at interactive exhibit in science center — Stock Photo
    Curious boy using pipette in beaker at interactive exhibit in science center
    Scientist examining specimen under microscope during clinical trial in laboratory. — Stock Photo
    Scientist examining specimen under microscope during clinical trial in laboratory.
    Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory. — Stock Photo
    Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory.
    Teenage girl experimenting chemical solution in laboratory — Stock Photo
    Teenage girl experimenting chemical solution in laboratory
    Cropped shot of doctor treats painful knee with cold — Stock Photo
    Cropped shot of doctor treats painful knee with cold
    Aged male in headphones and mask sitting in room with doctor conducting audiological diagnostic of hearing — Stock Photo
    Aged male in headphones and mask sitting in room with doctor conducting audiological diagnostic of hearing
    Optometrist adjusting the optometry equipment during study of the eyesight of a black woman — Stock Photo
    Optometrist adjusting the optometry equipment during study of the eyesight of a black woman
    Close-up of multichannel pipette with green liquid pipetting into multiwell plate in laboratory. — Stock Photo
    Close-up of multichannel pipette with green liquid pipetting into multiwell plate in laboratory.
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    Sliced carrot in test tube, studio shot. — Stock Photo
    Sliced carrot in test tube, studio shot.
    Quartz cuvettes containing red liquid. — Stock Photo
    Quartz cuvettes containing red liquid.
    Close-up of human blood and various medical samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various medical samples in test tubes while screening in medical lab.
    Scientist working looking at bottle in laboratory storage — Stock Photo
    Scientist working looking at bottle in laboratory storage
    Cropped unrecognizable woman hands holding a pregnancy test besides a window — Stock Photo
    Cropped unrecognizable woman hands holding a pregnancy test besides a window
    School in Grashoek village — Stock Photo
    School in Grashoek village
    Close-up of lab-on-a-chip integrated circuit device on black background. — Stock Photo
    Close-up of lab-on-a-chip integrated circuit device on black background.
    Female scientist working with test tube. — Stock Photo
    Female scientist working with test tube.
    Laboratory with scientific equipment to test and analyse products, drinks industry, Tasting and health and safety. — Stock Photo
    Laboratory with scientific equipment to test and analyse products, drinks industry, Tasting and health and safety.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Close-up shot of surgeon in operating room at work — Stock Photo
    Close-up shot of surgeon in operating room at work
    Close-up of pipetting colorful liquids into test tubes. — Stock Photo
    Close-up of pipetting colorful liquids into test tubes.
    Optician adjusting trial frame for eye examination preteen girl. — Stock Photo
    Optician adjusting trial frame for eye examination preteen girl.
    Young asian college students throwing paper in the air — Stock Photo
    Young asian college students throwing paper in the air
    Senior woman preparing DNA test kit. — Stock Photo
    Senior woman preparing DNA test kit.
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Male optometrist examining eye test equipment — Stock Photo
    Male optometrist examining eye test equipment
    Female scientist holding micro tube with sample in ancient DNA laboratory with human skull on table. — Stock Photo
    Female scientist holding micro tube with sample in ancient DNA laboratory with human skull on table.
    Young asian college students throwing paper in the air — Stock Photo
    Young asian college students throwing paper in the air
    Motorcycle mechanic doing diagnostic test on motorcycle in workshop — Stock Photo
    Motorcycle mechanic doing diagnostic test on motorcycle in workshop
    DNA home test kit. — Stock Photo
    DNA home test kit.
    Scientist holding samples in multi well plate during experiment in laboratory. — Stock Photo
    Scientist holding samples in multi well plate during experiment in laboratory.
    Overhead view of pipettes in Pipetting plate in laboratory — Stock Photo
    Overhead view of pipettes in Pipetting plate in laboratory
    Machine for automated analysis of donated blood. — Stock Photo
    Machine for automated analysis of donated blood.
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Ophthalmologist examining female patient with slit lamp in clinic. — Stock Photo
    Ophthalmologist examining female patient with slit lamp in clinic.
    PCR tubes with orange, green and purple samples, full frame. — Stock Photo
    PCR tubes with orange, green and purple samples, full frame.
    Overhead view of pipette in Pipetting plate in laboratory — Stock Photo
    Overhead view of pipette in Pipetting plate in laboratory
    Hand of researcher holding vacutainer tube above pool of blood and syringe. — Stock Photo
    Hand of researcher holding vacutainer tube above pool of blood and syringe.
    Female scientist holding microscope slide with blood sample. — Stock Photo
    Female scientist holding microscope slide with blood sample.