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    Normal red blood cells — Stock Photo
    Normal red blood cells
    Structure and anatomy of human teeth — Stock Photo
    Structure and anatomy of human teeth
    3d illustration of normal looking blue colored and transparent x and y chromosomes. — Stock Photo
    3d illustration of normal looking blue colored and transparent x and y chromosomes.
    Forensic DNA autoradiogram — Stock Photo
    Forensic DNA autoradiogram
    Person hand pipetting liquid into petri dish. — Stock Photo
    Person hand pipetting liquid into petri dish.
    Close-up of microbes and fungus growing on agar plate. — Stock Photo
    Close-up of microbes and fungus growing on agar plate.
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage.
    Female mosquito on skin — Stock Photo
    Female mosquito on skin
    Scientist hand placing sample on slide under microscope. — Stock Photo
    Scientist hand placing sample on slide under microscope.
    Satellite view of Saturn — Stock Photo
    Satellite view of Saturn
    Colored digital illustration of cancer cell. — Stock Photo
    Colored digital illustration of cancer cell.
    Localization of pain in shoulder joint — Stock Photo
    Localization of pain in shoulder joint
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Male scientist soldering circuit board in laboratory — Stock Photo
    Male scientist soldering circuit board in laboratory
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Close-up of worker examining printed circuit board in glass factory — Stock Photo
    Close-up of worker examining printed circuit board in glass factory
    Giardia lamblia flagellated protozoan parasite, digital illustration. — Stock Photo
    Giardia lamblia flagellated protozoan parasite, digital illustration.
    Parasitic tick biting skin — Stock Photo
    Parasitic tick biting skin
    Healthy colon and skeletal system — Stock Photo
    Healthy colon and skeletal system
    Cladosporium fungi on white background, digital illustration. — Stock Photo
    Cladosporium fungi on white background, digital illustration.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Skeletal system and anatomy of adult human — Stock Photo
    Skeletal system and anatomy of adult human
    Adult dust mite — Stock Photo
    Adult dust mite
    Haemophilus ducreyi bacteria, digital illustration. — Stock Photo
    Haemophilus ducreyi bacteria, digital illustration.
    Magnified digital illustration of dendritic cell. — Stock Photo
    Magnified digital illustration of dendritic cell.
    Petri dishes for DNA sequencing, close-up. — Stock Photo
    Petri dishes for DNA sequencing, close-up.
    Internal organs and skeletal system — Stock Photo
    Internal organs and skeletal system
    Illustration of a view over the rim of a crater on Mars. Mars is the fourth planet in our Solar System, and the subject of more space missions than any other world. — Stock Photo
    Illustration of a view over the rim of a crater on Mars. Mars is the fourth planet in our Solar System, and the subject of more space missions than any other world.
    Chemist boy in laboratory robe and plastic glasses looking at camera with mad gaze on beige background — Stock Photo
    Chemist boy in laboratory robe and plastic glasses looking at camera with mad gaze on beige background
    3d close-up illustration of few twisting ebola fever pathogens. — Stock Photo
    3d close-up illustration of few twisting ebola fever pathogens.
    Digital illustration of nanorobot attacking rod-shaped bacterium with laser beam. — Stock Photo
    Digital illustration of nanorobot attacking rod-shaped bacterium with laser beam.
    Measles virus particles, digital illustration. — Stock Photo
    Measles virus particles, digital illustration.
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Close-up of microbes and fungus growing on agar plate on white background. — Stock Photo
    Close-up of microbes and fungus growing on agar plate on white background.
    Ectopic IUD contraceptive — Stock Photo
    Ectopic IUD contraceptive
    Petri dish and cell sampling brush. — Stock Photo
    Petri dish and cell sampling brush.
    View of Fetus at 24 weeks — Stock Photo
    View of Fetus at 24 weeks
    Scientist checking a solution in conical flask at lab — Stock Photo
    Scientist checking a solution in conical flask at lab
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Assistant working in lab with pink liquid — Stock Photo
    Assistant working in lab with pink liquid
    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.
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Illustration of illuminated red human cancer cells. — Stock Photo
    Illustration of illuminated red human cancer cells.
    Human sperm cells — Stock Photo
    Human sperm cells
    Male and female student standing in lab — Stock Photo
    Male and female student standing in lab
    View of fetus at 7 weeks — Stock Photo
    View of fetus at 7 weeks
    Red blood cells on white background, digital illustration. — Stock Photo
    Red blood cells on white background, digital illustration.
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Serratia marcescens rod-shaped Gram-negative bacteria, digital illustration — Stock Photo
    Serratia marcescens rod-shaped Gram-negative bacteria, digital illustration
    3d illustration of broken or defective orange colored x and y chromosomes. — Stock Photo
    3d illustration of broken or defective orange colored x and y chromosomes.
    Close-up of glass syringe with stand arranged on table in laboratory — Stock Photo
    Close-up of glass syringe with stand arranged on table in laboratory
    Hand holding a petri dish with green growth medium. — Stock Photo
    Hand holding a petri dish with green growth medium.
    Male teacher helping girl student at microscope in laboratory classroom — Stock Photo
    Male teacher helping girl student at microscope in laboratory classroom
    Close-up of lab machine in laboratory — Stock Photo
    Close-up of lab machine in laboratory
    Four syringes with colorful liquids, studio shot. — Stock Photo
    Four syringes with colorful liquids, studio shot.
    Person hand holding petri dish with biological culture. — Stock Photo
    Person hand holding petri dish with biological culture.
    Digital 3d colored illustration of cancer cell in process of mitosis. — Stock Photo
    Digital 3d colored illustration of cancer cell in process of mitosis.
    Healthy red blood cells — Stock Photo
    Healthy red blood cells
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    3d illustration of flu pathogen in cross-section. — Stock Photo
    3d illustration of flu pathogen in cross-section.