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    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes).
    Western Gorilla Portrait — Stock Photo
    Western Gorilla Portrait
    Wheat in petri dish, studio shot. — Stock Photo
    Wheat in petri dish, studio shot.
    Male anatomy showing Semimembranosus muscle, computer illustration. — Stock Photo
    Male anatomy showing Semimembranosus muscle, computer illustration.
    Knee joint structural anatomy — Stock Photo
    Knee joint structural anatomy
    Close-up view of researcher hand taking blood sample from rack of medical samples. — Stock Photo
    Close-up view of researcher hand taking blood sample from rack of medical samples.
    Digital artwork of abstract pathogenic microorganism in human large intestine. — Stock Photo
    Digital artwork of abstract pathogenic microorganism in human large intestine.
    Illustration of transparent blue silhouette of male body with colored kidneys. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored kidneys.
    Scenic view of row of cultivation in the farm at dawn — Stock Photo
    Scenic view of row of cultivation in the farm at dawn
    Small bee eater with colorful plumage sitting on tree branch in natural habitat — Stock Photo
    Small bee eater with colorful plumage sitting on tree branch in natural habitat
    Black Labrador dog — Stock Photo
    Black Labrador dog
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Green exotic frog sitting on leaf on black background — Stock Photo
    Green exotic frog sitting on leaf on black background
    Coronavirus particles, computer illustration — Stock Photo
    Coronavirus particles, computer illustration
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Dog silhouette with red colored genitals on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored genitals on black background, digital illustration.
    Cowboys man and woman — Stock Photo
    Cowboys man and woman
    Milk vetch, dang shen, hawthorn fruit and senna herbs on white background. — Stock Photo
    Milk vetch, dang shen, hawthorn fruit and senna herbs on white background.
    Coloured 3D computed tomography (CT) scan of the healthy foot of a 23 year old patient. — Stock Photo
    Coloured 3D computed tomography (CT) scan of the healthy foot of a 23 year old patient.
    Male anatomy showing Flexor hallucis muscle, computer illustration. — Stock Photo
    Male anatomy showing Flexor hallucis muscle, computer illustration.
    Horse anatomy and skeletal system, computer illustration. — Stock Photo
    Horse anatomy and skeletal system, computer illustration.
    Illustration of ascariasis worm on black background. — Stock Photo
    Illustration of ascariasis worm on black background.
    Laboratory assistants working in lab. — Stock Photo
    Laboratory assistants working in lab.
    Small unripe cherry tomatoes growing on twig of plant in agricultural farm in rural area — Stock Photo
    Small unripe cherry tomatoes growing on twig of plant in agricultural farm in rural area
    Fat cells, computer illustration — Stock Photo
    Fat cells, computer illustration
    Male body nervous system, computer illustration. — Stock Photo
    Male body nervous system, computer illustration.
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore — Stock Photo
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore
    St. Louis encephalitis virus particles, computer illustration — Stock Photo
    St. Louis encephalitis virus particles, computer illustration
    3d rendered illustration of little tick on skin surface. — Stock Photo
    3d rendered illustration of little tick on skin surface.
    Human fetus at week 7, realistic digital illustration. — Stock Photo
    Human fetus at week 7, realistic digital illustration.
    Full dog musculature with internal organs, digital illustration. — Stock Photo
    Full dog musculature with internal organs, digital illustration.
    Illustration of purple chloride channels in cell membrane. — Stock Photo
    Illustration of purple chloride channels in cell membrane.
    Lymphatic system with nodes — Stock Photo
    Lymphatic system with nodes
    Illustration of thyroid tumour in transparent male silhouette. — Stock Photo
    Illustration of thyroid tumour in transparent male silhouette.
    Stick insect on leaf against blurred background — Stock Photo
    Stick insect on leaf against blurred background
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Rhomboid major muscle, computer illustration — Stock Photo
    Rhomboid major muscle, computer illustration
    Lysozyme molecular structure, digital illustration. — Stock Photo
    Lysozyme molecular structure, digital illustration.
    Female head and neck anatomy and skeletal system, computer illustration. — Stock Photo
    Female head and neck anatomy and skeletal system, computer illustration.
    3d rendered illustration of medial meniscus in human skeleton. — Stock Photo
    3d rendered illustration of medial meniscus in human skeleton.
    Cow And Bull Elk — Stock Photo
    Cow And Bull Elk
    Closeup of organic golden honeycomb background — Stock Photo
    Closeup of organic golden honeycomb background
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Spider and two flies feeding on kissing bug against blurred background — Stock Photo
    Spider and two flies feeding on kissing bug against blurred background
    Human heart with colored pulmonary valve, computer illustration. — Stock Photo
    Human heart with colored pulmonary valve, computer illustration.
    Biotechnology artwork, conceptual illustration. — Stock Photo
    Biotechnology artwork, conceptual illustration.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Pegomya bicolor fly trapped by frozen dew drop at tip of grass blade. — Stock Photo
    Pegomya bicolor fly trapped by frozen dew drop at tip of grass blade.
    Medical illustration of kidneys cancer in female silhouette. — Stock Photo
    Medical illustration of kidneys cancer in female silhouette.
    Illustration of cervical spine in human skeleton on blue background. — Stock Photo
    Illustration of cervical spine in human skeleton on blue background.
    Anatomy of breast implants in female body 3d model, digital illustration. — Stock Photo
    Anatomy of breast implants in female body 3d model, digital illustration.
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Abstract female body with uterus cancer, digital illustration. — Stock Photo
    Abstract female body with uterus cancer, digital illustration.
    Female body showing skeleton and lymphatic system, digital illustration. — Stock Photo
    Female body showing skeleton and lymphatic system, digital illustration.
    3d illustration of sperm cells moving towards human womb. — Stock Photo
    3d illustration of sperm cells moving towards human womb.
    Illustration of senior woman silhouette with colored heart on white background. — Stock Photo
    Illustration of senior woman silhouette with colored heart on white background.
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    In vitro fertilisation, computer illustration — Stock Photo
    In vitro fertilisation, computer illustration