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    Senior woman using spirometer, measuring lung capacity and peak expiratory force. — Stock Photo
    Senior woman using spirometer, measuring lung capacity and peak expiratory force.
    Organ-on-a-chip. This is a microfluidic device that simulates biological organs. — Stock Photo
    Organ-on-a-chip. This is a microfluidic device that simulates biological organs.
    Mother helping son test blood sugar — Stock Photo
    Mother helping son test blood sugar
    Radiologist talking to patient in CT scanner. — Stock Photo
    Radiologist talking to patient in CT scanner.
    Crop concentrated female scientist in white robe and gloves conducting chemical experiment with substance and syringe while working in modern laboratory — Stock Photo
    Crop concentrated female scientist in white robe and gloves conducting chemical experiment with substance and syringe while working in modern laboratory
    Spirometry. Using digital spirometer with smart phone app, testing lungs. — Stock Photo
    Spirometry. Using digital spirometer with smart phone app, testing lungs.
    Ophthalmologist counseling patient regarding her eye condition — Stock Photo
    Ophthalmologist counseling patient regarding her eye condition
    Genetic Test. Tube and swab for DNA collection from mouth. — Stock Photo
    Genetic Test. Tube and swab for DNA collection from mouth.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Various nuts in test tubes, studio shot. — Stock Photo
    Various nuts in test tubes, studio shot.
    Scientist holding tomato piece with tweezers for food research. — Stock Photo
    Scientist holding tomato piece with tweezers for food research.
    Machine for automated analysis of donated blood. — Stock Photo
    Machine for automated analysis of donated blood.
    School in Grashoek village — Stock Photo
    School in Grashoek village
    Doctor testing patient blood sugar for diabetes in examination room — Stock Photo
    Doctor testing patient blood sugar for diabetes in examination room
    Close-up of syringes for allergy patch test. — Stock Photo
    Close-up of syringes for allergy patch test.
    Female college student taking test at desk in classroom — Stock Photo
    Female college student taking test at desk in classroom
    Female medical specialist in protective uniform, latex gloves and face mask doing nasal coronavirus test on African American mature woman patient in clinic during virus outbreak — Stock Photo
    Female medical specialist in protective uniform, latex gloves and face mask doing nasal coronavirus test on African American mature woman patient in clinic during virus outbreak
    Elder man checking his arterial pressure with machine — Stock Photo
    Elder man checking his arterial pressure with machine
    Team of scientists experimenting together in laboratory — Stock Photo
    Team of scientists experimenting together in laboratory
    Group of laboratory test tubes. — Stock Photo
    Group of laboratory test tubes.
    Scientist taking test tube from freezer in laboratory — Stock Photo
    Scientist taking test tube from freezer in laboratory
    Various food produce in test tubes, studio shot. — Stock Photo
    Various food produce in test tubes, studio shot.
    Female biologist pouring water into test tube with dissolved samples of soil in laboratory. — Stock Photo
    Female biologist pouring water into test tube with dissolved samples of soil in laboratory.
    Scientist holding DNA sample in tube with autoradiograph on DNA gel. — Stock Photo
    Scientist holding DNA sample in tube with autoradiograph on DNA gel.
    Police evidence including finger print, DNA swab and results. — Stock Photo
    Police evidence including finger print, DNA swab and results.
    Female scientist opening lid of machine in lab — Stock Photo
    Female scientist opening lid of machine in lab
    Cropped unrecognizable doctor's hand showing and making with pen a negative blood test of Coronavirus against a pink background — Stock Photo
    Cropped unrecognizable doctor's hand showing and making with pen a negative blood test of Coronavirus against a pink background
    Scientist checking a solution in conical flask in lab — Stock Photo
    Scientist checking a solution in conical flask in lab
    Chinese doctor showing x-ray test result to senior couple — Stock Photo
    Chinese doctor showing x-ray test result to senior couple
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Female researcher preparing multi-well sample tray of blood for analysis. — Stock Photo
    Female researcher preparing multi-well sample tray of blood for analysis.
    Laboratory technician analyzing chemical solution in blood bank — Stock Photo
    Laboratory technician analyzing chemical solution in blood bank
    Senior man checking his blood sugar with glucometer at home — Stock Photo
    Senior man checking his blood sugar with glucometer at home
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Woman using a lance to take a finger prick blood sample. — Stock Photo
    Woman using a lance to take a finger prick blood sample.
    Woman dipping her hand in a river, Bulgaria — Stock Photo
    Woman dipping her hand in a river, Bulgaria
    Tools for gathering evidence at scene of crime. — Stock Photo
    Tools for gathering evidence at scene of crime.
    Optician testing a girl's eyes with optometry devices — Stock Photo
    Optician testing a girl's eyes with optometry devices
    Attentive university students doing a chemical experiment in laboratory — Stock Photo
    Attentive university students doing a chemical experiment in laboratory
    Agronomy specialist taking soil sample for fertility analysis. — Stock Photo
    Agronomy specialist taking soil sample for fertility analysis.
    Pills in Petri dishes on gray background. — Stock Photo
    Pills in Petri dishes on gray background.
    Woman checking blood pressure test at hospital — Stock Photo
    Woman checking blood pressure test at hospital
    Cropped view of scientist hands holding samples for biological research. — Stock Photo
    Cropped view of scientist hands holding samples for biological research.
    Close up of microscope in laboratory — Stock Photo
    Close up of microscope in laboratory
    Close-up of optometrist examining patient eyes with eye test equipment in clinic — Stock Photo
    Close-up of optometrist examining patient eyes with eye test equipment in clinic
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    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
    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.
    Doctors examining boy teeth in dental clinic with mouth mirror. — Stock Photo
    Doctors examining boy teeth in dental clinic with mouth mirror.
    Monitoring respiratory illness with digital spirometer. — Stock Photo
    Monitoring respiratory illness with digital spirometer.
    Top view of bread and pasta with celiac test equipment, studio shot. — Stock Photo
    Top view of bread and pasta with celiac test equipment, studio shot.
    Female scientist working with test tube. — Stock Photo
    Female scientist working with test tube.
    Scientist making experiment with steaming flasks — Stock Photo
    Scientist making experiment with steaming flasks
    Urine sample with test strip showing results. — Stock Photo
    Urine sample with test strip showing results.
    Test tube with blue chemical fluid placed in cold water in glass jar in modern equipped laboratory — Stock Photo
    Test tube with blue chemical fluid placed in cold water in glass jar in modern equipped laboratory
    Female immunologist wiping boy arm after skin prick allergy testing. — Stock Photo
    Female immunologist wiping boy arm after skin prick allergy testing.
    Scientist analyzing a sample in a test tube at lab — Stock Photo
    Scientist analyzing a sample in a test tube at lab
    Male adult engineer in water treatment plant — Stock Photo
    Male adult engineer in water treatment plant
    Physician measuring arm circumference with tape measure on male athlete. — Stock Photo
    Physician measuring arm circumference with tape measure on male athlete.