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    Low angle view of scientist holding glass flask in laboratory. — Stock Photo
    Low angle view of scientist holding glass flask in laboratory.
    Collage of crowd masks protecting factor KN95 on a red background overhead view — Stock Photo
    Collage of crowd masks protecting factor KN95 on a red background overhead view
    Mid section of laboratory technician working in blood bank — Stock Photo
    Mid section of laboratory technician working in blood bank
    Bacterial colonies on agar plates — Stock Photo
    Bacterial colonies on agar plates
    Crop anonymous doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    Crop anonymous doctor in medical glove demonstrating test tube with blood sample on white background
    Corneal topography. Ophthalmologist scanning a patient's eye to obtain a three-dimensional image of the cornea. — Stock Photo
    Corneal topography. Ophthalmologist scanning a patient's eye to obtain a three-dimensional image of the cornea.
    Ophthalmologist using auto refractometer eye examination equipment on boy in clinic. — Stock Photo
    Ophthalmologist using auto refractometer eye examination equipment on boy in clinic.
    Scientist viewing sample on glass slide under light microscope. — Stock Photo
    Scientist viewing sample on glass slide under light microscope.
    Pill in Petri dish on gray background. — Stock Photo
    Pill in Petri dish on gray background.
    Woman checking her insulin levels before eating a cake — Stock Photo
    Woman checking her insulin levels before eating a cake
    Refrigerated centrifuge machine with test tube in blood bank — Stock Photo
    Refrigerated centrifuge machine with test tube in blood bank
    White mask with reusable KN95 protection index for virus protection on yellow background — Stock Photo
    White mask with reusable KN95 protection index for virus protection on yellow background
    Laboratory technician analyzing blood bag in blood bank — Stock Photo
    Laboratory technician analyzing blood bag in blood bank
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Home care specialist checking blood pressure of patient at home — Stock Photo
    Home care specialist checking blood pressure of patient at home
    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.
    Crop scientist adding liquid in flask — Stock Photo
    Crop scientist adding liquid in flask
    Female psychologist helping boy coloring shapes with colorful pens for developmental psychology test. — Stock Photo
    Female psychologist helping boy coloring shapes with colorful pens for developmental psychology test.
    Human blood cells, computer illustration — Stock Photo
    Human blood cells, computer illustration
    Test tubes, computer illustration — Stock Photo
    Test tubes, computer illustration
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Top view of mosaic or pattern of positive blood tests over blue background. — Stock Photo
    Top view of mosaic or pattern of positive blood tests over blue background.
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    Human Platelets, computer illustration — Stock Photo
    Human Platelets, computer illustration
    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.
    Glass tube with blood sample of patient placed near syringe on table in vet clinic laboratory — Stock Photo
    Glass tube with blood sample of patient placed near syringe on table in vet clinic laboratory
    Back view crop male chemist in white robe latex gloves and face mask taking laboratory glassware from shelf while conducting research — Stock Photo
    Back view crop male chemist in white robe latex gloves and face mask taking laboratory glassware from shelf while conducting research
    Plant sprouts in Petri dish under light microscope. — Stock Photo
    Plant sprouts in Petri dish under light microscope.
    Female scientist with test tubes researching coronavirus vaccine — Stock Photo
    Female scientist with test tubes researching coronavirus vaccine
    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
    Chinese doctor showing x-ray test result to senior couple — Stock Photo
    Chinese doctor showing x-ray test result to senior couple
    Little girl having finger prick test in medical clinic. — Stock Photo
    Little girl having finger prick test in medical clinic.
    Male patient going through x-ray test in hospital — Stock Photo
    Male patient going through x-ray test in hospital
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial — Stock Photo
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial
    Patient undergoing skin prick test in allergy clinic. — Stock Photo
    Patient undergoing skin prick test in allergy clinic.
    Female doctor putting headphones on boy having hearing test. — Stock Photo
    Female doctor putting headphones on boy having hearing test.
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office. — Stock Photo
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office.
    Close-up of dentist drilling boy teeth in clinic. — Stock Photo
    Close-up of dentist drilling boy teeth in clinic.
    Male optometrist examining eye test equipment — Stock Photo
    Male optometrist examining eye test equipment
    Preschooler boy undergoing logic cards test for developmental psychology test in female psychologist office. — Stock Photo
    Preschooler boy undergoing logic cards test for developmental psychology test in female psychologist office.
    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 dentist taking x-ray of patient teeth at clinic — Stock Photo
    Female dentist taking x-ray of patient teeth at clinic
    Pipette and petri dishes for blood testing. — Stock Photo
    Pipette and petri dishes for blood testing.
    Test tubes with urine samples for analysis on white background, studio shot. — Stock Photo
    Test tubes with urine samples for analysis on white background, studio shot.
    Close-up shot of doctor examining belly of pregnant woman with ultrasound — Stock Photo
    Close-up shot of doctor examining belly of pregnant woman with ultrasound
    Pipette adding a solution to a sample — Stock Photo
    Pipette adding a solution to a sample
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Measuring oxygen levels in blood with pulse oximeter. — Stock Photo
    Measuring oxygen levels in blood with pulse oximeter.
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background — Stock Photo
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Female scientist working with test tube. — Stock Photo
    Female scientist working with test tube.
    Scientist with papers standing in storage and doing revision in lab. — Stock Photo
    Scientist with papers standing in storage and doing revision in lab.
    Modern machine in blood bank — Stock Photo
    Modern machine in blood bank
    Male optometrist examining eye test equipment — Stock Photo
    Male optometrist examining eye test equipment
    Scientist posing in protective costume in laboratory — Stock Photo
    Scientist posing in protective costume in laboratory
    Hands of physical therapist performing skinfold test to measuring teenage boy body fat. — Stock Photo
    Hands of physical therapist performing skinfold test to measuring teenage boy body fat.
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Barcodes on test tubes with blood samples. — Stock Photo
    Barcodes on test tubes with blood samples.