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    Urine sample with test strip on white background. — Stock Photo
    Urine sample with test strip on white background.
    Young asian college students studying together — Stock Photo
    Young asian college students studying together
    Scientist using a machine for experiment in lab — Stock Photo
    Scientist using a machine for experiment in lab
    Mid section of scientists doing experiment in lab — Stock Photo
    Mid section of scientists doing experiment in lab
    Cropped unrecognizable woman hands holding a pregnancy test besides a window — Stock Photo
    Cropped unrecognizable woman hands holding a pregnancy test besides a window
    Scientist hand holding test tube containing solid fluorescent chemical glowing green. — Stock Photo
    Scientist hand holding test tube containing solid fluorescent chemical glowing green.
    Senior man checking his blood sugar with glucometer at home — Stock Photo
    Senior man checking his blood sugar with glucometer at home
    Ophthalmologist examining a woman's eyes with an indirect ophthalmoscope — Stock Photo
    Ophthalmologist examining a woman's eyes with an indirect ophthalmoscope
    Senior woman using spirometer, measuring lung capacity and peak expiratory force. — Stock Photo
    Senior woman using spirometer, measuring lung capacity and peak expiratory force.
    Young asian college student with documents posing against grey wall — Stock Photo
    Young asian college student with documents posing against grey wall
    Various berries in test tubes, studio shot. — Stock Photo
    Various berries in test tubes, studio shot.
    Boy does homework near father working — Stock Photo
    Boy does homework near father working
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Laboratory technician checking invoices in blood bank — Stock Photo
    Laboratory technician checking invoices in blood bank
    Water department technician installing a snow stake — Stock Photo
    Water department technician installing a snow stake
    Blood sample in kidney dish with urine sample on table. — Stock Photo
    Blood sample in kidney dish with urine sample on table.
    Happy senior male with phoropter during eye examination looking at camera and thumb up — Stock Photo
    Happy senior male with phoropter during eye examination looking at camera and thumb up
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office. — Stock Photo
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office.
    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.
    Scared boy looking at dental drill in dentist hand. — Stock Photo
    Scared boy looking at dental drill in dentist hand.
    Pregnant female inspecting sonogram picture while lying on bed in ward of modern fertility clinic — Stock Photo
    Pregnant female inspecting sonogram picture while lying on bed in ward of modern fertility clinic
    Water department technician reinstalling caps on fire hydrant — Stock Photo
    Water department technician reinstalling caps on fire hydrant
    Woman sitting on bed and checking pregnancy test — Stock Photo
    Woman sitting on bed and checking pregnancy test
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman and looking at computer screen in hospital — Stock Photo
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman and looking at computer screen in hospital
    Scientist viewing sample on glass slide before light microscope. — Stock Photo
    Scientist viewing sample on glass slide before light microscope.
    Paramedic wearing personal protective equipment PPE holding folder sta — Stock Photo
    Paramedic wearing personal protective equipment PPE holding folder sta
    Teacher and students enjoying elephants toothpaste foam interactive exhibit in science center — Stock Photo
    Teacher and students enjoying elephants toothpaste foam interactive exhibit in science center
    Genetic research, conceptual illustration. DNA (deoxyribonucleic acid) molecule in blood sample tubes in a centrifuge. — Stock Photo
    Genetic research, conceptual illustration. DNA (deoxyribonucleic acid) molecule in blood sample tubes in a centrifuge.
    Chinese woman taking test drive with car dealer assistance — Stock Photo
    Chinese woman taking test drive with car dealer assistance
    Boy coloring shapes with colorful pens for developmental psychology test in female doctor office. — Stock Photo
    Boy coloring shapes with colorful pens for developmental psychology test in female doctor office.
    Close-up of a doctor putting a PCR test swab into a tube — Stock Photo
    Close-up of a doctor putting a PCR test swab into a tube
    Doctor wearing on woman eyesight testing spectacles. — Stock Photo
    Doctor wearing on woman eyesight testing spectacles.
    Attentive university students doing a experiment in laboratory — Stock Photo
    Attentive university students doing a experiment in laboratory
    Close-up of multiple test stick being placed into urine sample tube by female doctor. — Stock Photo
    Close-up of multiple test stick being placed into urine sample tube by female doctor.
    DNA testing using saliva sample. — Stock Photo
    DNA testing using saliva sample.
    Hand of doctor using medical tonometer in front of blurred x-ray image — Stock Photo
    Hand of doctor using medical tonometer in front of blurred x-ray image
    Female scientist pipetting liquid into Eppendorf tubes. — Stock Photo
    Female scientist pipetting liquid into Eppendorf tubes.
    Quartz cuvettes containing red liquid. — Stock Photo
    Quartz cuvettes containing red liquid.
    Biologist with protective gloves performing a coronavirus test on a person in a car — Stock Photo
    Biologist with protective gloves performing a coronavirus test on a person in a car
    Test tubes with urine samples for analysis, studio shot. — Stock Photo
    Test tubes with urine samples for analysis, studio shot.
    Car salesman talking to couple — Stock Photo
    Car salesman talking to couple
    Collage of masks for protection factor KN95 on a blue background zenith view — Stock Photo
    Collage of masks for protection factor KN95 on a blue background zenith view
    Team of dentists operating on a patient — Stock Photo
    Team of dentists operating on a patient
    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 multichannel pipette with green liquid on multiwell plate in laboratory. — Stock Photo
    Close-up of multichannel pipette with green liquid on multiwell plate in laboratory.
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    Scientists experimenting together in laboratory — Stock Photo
    Scientists experimenting together in laboratory
    Attentive university students doing a experiment in laboratory — Stock Photo
    Attentive university students doing a experiment in laboratory
    Scientist hand sampling water in test tube for quality testing. — Stock Photo
    Scientist hand sampling water in test tube for quality testing.
    Middle-aged woman on an open MRI machine waiting for the test to begin — Stock Photo
    Middle-aged woman on an open MRI machine waiting for the test to begin
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining pregnant woman and looking at computer screen in hospital — Stock Photo
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining pregnant woman and looking at computer screen in hospital
    Pile of filled medical tesing tubes — Stock Photo
    Pile of filled medical tesing tubes
    Lab chemist preparing graduated cylinder for standard solution — Stock Photo
    Lab chemist preparing graduated cylinder for standard solution
    Protection against coronavirus. Alternative fabric mask. Man with different type of masks. — Stock Photo
    Protection against coronavirus. Alternative fabric mask. Man with different type of masks.
    Dentist looking at dental x-ray plate in clinic — Stock Photo
    Dentist looking at dental x-ray plate in clinic
    Female doctor taking care of patient in intensive care ward. — Stock Photo
    Female doctor taking care of patient in intensive care ward.
    Thoughtful high school boy taking exam at desk in classroom — Stock Photo
    Thoughtful high school boy taking exam at desk in classroom
    College students taking test at desks in classroom — Stock Photo
    College students taking test at desks in classroom
    Medical testing microscopes and equipment in laboratory. — Stock Photo
    Medical testing microscopes and equipment in laboratory.