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    Scientist selecting human blood sample in laboratory. — Stock Photo
    Scientist selecting human blood sample in laboratory.
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    African american senior male doctor performing throat swab test on african american man at home. medical testing for prevention of coronavirus outbreak concept — Stock Photo
    African american senior male doctor performing throat swab test on african american man at home. medical testing for prevention of coronavirus outbreak concept
    Scientist viewing medical sample on glass slide under microscope in laboratory. — Stock Photo
    Scientist viewing medical sample on glass slide under microscope in laboratory.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Female scientist using pipette in laboratory — Stock Photo
    Female scientist using pipette in laboratory
    Genetic research tube containing DNA sample with DNA profile in background. — Stock Photo
    Genetic research tube containing DNA sample with DNA profile in background.
    Woman undergoing ophthalmology visual field testing with A-scan ultrasound biometry. — Stock Photo
    Woman undergoing ophthalmology visual field testing with A-scan ultrasound biometry.
    Scientist holding syringe over variety of pharmaceutical vials. — Stock Photo
    Scientist holding syringe over variety of pharmaceutical vials.
    Man having eye test with special equipment. — Stock Photo
    Man having eye test with special equipment.
    Drug research and clinical testing — Stock Photo
    Drug research and clinical testing
    Doctor giving young girl finger prick test. — Stock Photo
    Doctor giving young girl finger prick test.
    A nurse is in protective gear against covid-19 — Stock Photo
    A nurse is in protective gear against covid-19
    Smart business executive checking sugar level in office — Stock Photo
    Smart business executive checking sugar level in office
    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.
    Scientists preparing blood sample for analysis under light microscope. — Stock Photo
    Scientists preparing blood sample for analysis under light microscope.
    Female scientist working with test tube. — Stock Photo
    Female scientist working with test tube.
    Scientist viewing sample on glass slide under light microscope. — Stock Photo
    Scientist viewing sample on glass slide under light microscope.
    Close-up of doctor holding prepared influenza nasal vaccine. — Stock Photo
    Close-up of doctor holding prepared influenza nasal vaccine.
    Female scientist pipetting sample into microcentrifuge tubes ready for automated analysis while biotechnology research. — Stock Photo
    Female scientist pipetting sample into microcentrifuge tubes ready for automated analysis while biotechnology research.
    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.
    Close-up of stethoscope alongside blood sample in test tube, syringe and medical vial in a clinic. — Stock Photo
    Close-up of stethoscope alongside blood sample in test tube, syringe and medical vial in a clinic.
    Man and older lady walking dog on sidewalk of suburban neighborhood. — Stock Photo
    Man and older lady walking dog on sidewalk of suburban neighborhood.
    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.
    Doctor reading the results of blood test while holding blood sample. — Stock Photo
    Doctor reading the results of blood test while holding blood sample.
    Female scientist working with test tube — Stock Photo
    Female scientist working with test tube
    Cropped view of overweight man using peak flow meter. — Stock Photo
    Cropped view of overweight man using peak flow meter.
    Close-up of pipetting sample into row of test tubes during experiment in laboratory. — Stock Photo
    Close-up of pipetting sample into row of test tubes during experiment in laboratory.
    Scientist pipetting sample into vial in laboratory. — Stock Photo
    Scientist pipetting sample into vial in laboratory.
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    Medical testing microscopes and equipment in laboratory. — Stock Photo
    Medical testing microscopes and equipment in laboratory.
    Female doctor performing allergy skin prick test on little boy arm. — Stock Photo
    Female doctor performing allergy skin prick test on little boy arm.
    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic. — Stock Photo
    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic.
    Close-up view of medical sample with genetic test results. — Stock Photo
    Close-up view of medical sample with genetic test results.
    Patient undergoing skin prick test in allergy clinic. — Stock Photo
    Patient undergoing skin prick test in allergy clinic.
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    Still life of microscope on laboratory bench. — Stock Photo
    Still life of microscope on laboratory bench.
    Variety of potential drugs in petri dish on DNA autoradiogram. — Stock Photo
    Variety of potential drugs in petri dish on DNA autoradiogram.
    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.
    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.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    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
    Doctor reading the results of blood test while holding blood sample. — Stock Photo
    Doctor reading the results of blood test while holding blood sample.
    Scientist analyzing a sample in a test tube at lab — Stock Photo
    Scientist analyzing a sample in a test tube at lab
    Ophthalmologist examining female patient with slit lamp in clinic. — Stock Photo
    Ophthalmologist examining female patient with slit lamp in clinic.
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Hand in latex glove holding raw meat — Stock Photo
    Hand in latex glove holding raw meat
    Lab chemist placing a sample slide on a microscope stage — Stock Photo
    Lab chemist placing a sample slide on a microscope stage
    Person in latex glove holding test tube with ear of wheat — Stock Photo
    Person in latex glove holding test tube with ear of wheat
    Patient having electrodes attached to legs by physician for electromyography nerve conduction test. — Stock Photo
    Patient having electrodes attached to legs by physician for electromyography nerve conduction test.
    Female immunologist performing skin prick allergy testing on preschooler boy. — Stock Photo
    Female immunologist performing skin prick allergy testing on preschooler boy.
    Close-up of doctor holding prepared influenza nasal vaccine. — Stock Photo
    Close-up of doctor holding prepared influenza nasal vaccine.
    Pipette bottles in tray with allergens. — Stock Photo
    Pipette bottles in tray with allergens.
    Female patient at eye test with slit lamp in ophthalmology clinic. — Stock Photo
    Female patient at eye test with slit lamp in ophthalmology clinic.
    Scientists preparing glass slide with sample in laboratory. — Stock Photo
    Scientists preparing glass slide with sample in laboratory.
    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.