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    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Lab technician holding tray of calibrated samples — Stock Photo
    Lab technician holding tray of calibrated samples
    Scientist pouring liquid in steaming flask — Stock Photo
    Scientist pouring liquid in steaming flask
    Teenager holding molecular structure — Stock Photo
    Teenager holding molecular structure
    Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory. — Stock Photo
    Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory.
    Person hand holding petri dish with biological culture. — Stock Photo
    Person hand holding petri dish with biological culture.
    Close-up of male scientist pipetting into test tubes. — Stock Photo
    Close-up of male scientist pipetting into test tubes.
    Pipette adding a solution to a sample — Stock Photo
    Pipette adding a solution to a sample
    AIDS virus and antibodies — Stock Photo
    AIDS virus and antibodies
    Close-up of pipetting samples into Petri dishes. — Stock Photo
    Close-up of pipetting samples into Petri dishes.
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Cell-based testing kit in bioengineering laboratory. — Stock Photo
    Cell-based testing kit in bioengineering laboratory.
    Liquid being pipetted into petri dish. — Stock Photo
    Liquid being pipetted into petri dish.
    Row of transparent flasks with pink liquid reflected in glass table in biological laboratory on daytime — Stock Photo
    Row of transparent flasks with pink liquid reflected in glass table in biological laboratory on daytime
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory. — Stock Photo
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory.
    Cropped image scientist adding liquid in flask — Stock Photo
    Cropped image scientist adding liquid in flask
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Scientist checking nanofibre structure under light microscope. — Stock Photo
    Scientist checking nanofibre structure under light microscope.
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Close-up of pipetting sample into plastic micro-centrifuge tube. — Stock Photo
    Close-up of pipetting sample into plastic micro-centrifuge tube.
    Medium tray with cells and DNA autoradiogram for scientific research. — Stock Photo
    Medium tray with cells and DNA autoradiogram for scientific research.
    Crop unrecognizable biologist in latex gloves filling injector with liquid from small bottle in laboratory — Stock Photo
    Crop unrecognizable biologist in latex gloves filling injector with liquid from small bottle in laboratory
    Gene editing, conceptual digital illustration. — Stock Photo
    Gene editing, conceptual digital illustration.
    PCR micro tube strip with red liquid. — Stock Photo
    PCR micro tube strip with red liquid.
    Hematology analyzer with graphs on monitor near microscope and desktop computer with images on screen in lab — Stock Photo
    Hematology analyzer with graphs on monitor near microscope and desktop computer with images on screen in lab
    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.
    Lab technician picking up samples — Stock Photo
    Lab technician picking up samples
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Tubes for biological test in rack on blue background. — Stock Photo
    Tubes for biological test in rack on blue background.
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Human brain anatomy showing cortex — Stock Photo
    Human brain anatomy showing cortex
    Red blood cells and blood vessel — Stock Photo
    Red blood cells and blood vessel
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria.
    Petri dishes for DNA sequencing, close-up. — Stock Photo
    Petri dishes for DNA sequencing, close-up.
    Antibodies attacking virus particles, computer illustration. — Stock Photo
    Antibodies attacking virus particles, computer illustration.
    House dust mite on skin — Stock Photo
    House dust mite on skin
    Scientist holding DNA autoradiogram in hand. — Stock Photo
    Scientist holding DNA autoradiogram in hand.
    Crop unrecognizable biologist in latex gloves filling injector with liquid from small bottle in laboratory — Stock Photo
    Crop unrecognizable biologist in latex gloves filling injector with liquid from small bottle in laboratory
    Spotted eye hoverfly in profile portrait shot. — Stock Photo
    Spotted eye hoverfly in profile portrait shot.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Boy students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Boy students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Prosthetic heart valves — Stock Photo
    Prosthetic heart valves
    Blood vessels of the arms — Stock Photo
    Blood vessels of the arms
    Transparent cells on grey background, digital illustration. — Stock Photo
    Transparent cells on grey background, digital illustration.
    Bacterial infection and reproducing bacteria — Stock Photo
    Bacterial infection and reproducing bacteria
    Measles virus particles, digital illustration. — Stock Photo
    Measles virus particles, digital illustration.
    Lymphocyte white blood cell, digital illustration. — Stock Photo
    Lymphocyte white blood cell, digital illustration.
    Human skeletal system — Stock Photo
    Human skeletal system
    Close-up of pipettes in stand on desk — Stock Photo
    Close-up of pipettes in stand on desk
    Magnified digital illustration of mast cell. — Stock Photo
    Magnified digital illustration of mast cell.
    Skeletal system of girl — Stock Photo
    Skeletal system of girl
    Painted lady caterpillar on branch — Stock Photo
    Painted lady caterpillar on branch
    DNA molecule structure — Stock Photo
    DNA molecule structure
    Shoulder blade anatomy — Stock Photo
    Shoulder blade anatomy
    Close-up of person hand holding pill in tweezers for pharmaceutical research. — Stock Photo
    Close-up of person hand holding pill in tweezers for pharmaceutical research.
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Nanoscale spikes formed on gold surface — Stock Photo
    Nanoscale spikes formed on gold surface