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    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Tubes for biological test in rack on blue background. — Stock Photo
    Tubes for biological test in rack on blue background.
    Closeup view of food products in three test tubes — Stock Photo
    Closeup view of food products in three test tubes
    Close-up of microtubes with red liquid. — Stock Photo
    Close-up of microtubes with red liquid.
    Nurse adjusting controls on ventilator attached to unconscious patient. — Stock Photo
    Nurse adjusting controls on ventilator attached to unconscious patient.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Blood bags against white background. — Stock Photo
    Blood bags against white background.
    Close-up of Eppendorf tubes in rack. — Stock Photo
    Close-up of Eppendorf tubes in rack.
    Researcher preparing samples of donated blood for analysis. — Stock Photo
    Researcher preparing samples of donated blood for analysis.
    Variety of potential drugs in pharmaceutical vials and test tubes. — Stock Photo
    Variety of potential drugs in pharmaceutical vials and test tubes.
    Blood samples in centrifuge tubes on white background. — Stock Photo
    Blood samples in centrifuge tubes on white background.
    Female laboratory worker filling vials with pipette, close-up. — Stock Photo
    Female laboratory worker filling vials with pipette, close-up.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Close-up of pipetting into Eppendorf tubes. — Stock Photo
    Close-up of pipetting into Eppendorf tubes.
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Close-up of Eppendorf tubes in rack. — Stock Photo
    Close-up of Eppendorf tubes in rack.
    Close-up of ventilator beside unconscious man in hospital intensive care ward. — Stock Photo
    Close-up of ventilator beside unconscious man in hospital intensive care ward.
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Green seedlings in test tubes, close-up. — Stock Photo
    Green seedlings in test tubes, close-up.
    Italian pneumatic glue machine for shoes — Stock Photo
    Italian pneumatic glue machine for shoes
    Researcher using a light microscope for studying tube containing blood sample. — Stock Photo
    Researcher using a light microscope for studying tube containing blood sample.
    Close-up of microtubes with red liquid and person fingers. — Stock Photo
    Close-up of microtubes with red liquid and person fingers.
    Close-up of pipetting into microtubes. — Stock Photo
    Close-up of pipetting into microtubes.
    Liquids of different colors in sample vials in laboratory. — Stock Photo
    Liquids of different colors in sample vials in laboratory.
    Close-up of containers for blood group test. — Stock Photo
    Close-up of containers for blood group test.
    Close-up of pipetting colorful liquids into test tubes. — Stock Photo
    Close-up of pipetting colorful liquids into test tubes.
    Cropped view of scientist holding sample for analytical testing. — Stock Photo
    Cropped view of scientist holding sample for analytical testing.
    Close-up of pipetting liquid into test tubes — Stock Photo
    Close-up of pipetting liquid into test tubes
    Nurse adjusting controls on ventilator attached to unconscious patient. — Stock Photo
    Nurse adjusting controls on ventilator attached to unconscious patient.
    Close-up of sample tubes with medical samples. — Stock Photo
    Close-up of sample tubes with medical samples.
    Scientist holding tomato piece with tweezers for food research. — Stock Photo
    Scientist holding tomato piece with tweezers for food research.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Tanks, tubes and machinery in ouzo factory — Stock Photo
    Tanks, tubes and machinery in ouzo factory
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Close-up of microtubes stored in rack. — Stock Photo
    Close-up of microtubes stored in rack.
    Liquids of different colors in sample vials in laboratory. — Stock Photo
    Liquids of different colors in sample vials in laboratory.
    Scientist holding meat piece with tweezers for food research. — Stock Photo
    Scientist holding meat piece with tweezers for food research.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Ampoules of collagen skin care products. — Stock Photo
    Ampoules of collagen skin care products.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Green seedlings in test tubes, close-up. — Stock Photo
    Green seedlings in test tubes, close-up.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Female scientist using pipette for dropping liquid into eppendorf tubes. — Stock Photo
    Female scientist using pipette for dropping liquid into eppendorf tubes.
    Close-up of scientist taking tubes in in vitro fertilisation lab. — Stock Photo
    Close-up of scientist taking tubes in in vitro fertilisation lab.
    Assorted dried herbs in glass tubes tied on a white background — Stock Photo
    Assorted dried herbs in glass tubes tied on a white background
    Assorted disposable plastic pipette tips and sample tubes. — Stock Photo
    Assorted disposable plastic pipette tips and sample tubes.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Pipetting liquid into test tubes, close-up. — Stock Photo
    Pipetting liquid into test tubes, close-up.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Closeup view of colored drinking straws in a white cup — Stock Photo
    Closeup view of colored drinking straws in a white cup
    Chinese siblings with water sports equipment posing in front of car and parents — Stock Photo
    Chinese siblings with water sports equipment posing in front of car and parents
    Green seedlings in test tubes, close-up. — Stock Photo
    Green seedlings in test tubes, close-up.
    Blood samples in centrifuge tubes on white background. — Stock Photo
    Blood samples in centrifuge tubes on white background.
    Close-up of male scientist pipetting into test tubes. — Stock Photo
    Close-up of male scientist pipetting into test tubes.
    Chinese family putting water sports equipment into car trunk — Stock Photo
    Chinese family putting water sports equipment into car trunk