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    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration — Stock Photo
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration
    Male anatomy showing brain and nervous system, computer illustration. — Stock Photo
    Male anatomy showing brain and nervous system, computer illustration.
    Cross-section of human skin with hair follicle, digital illustration. — Stock Photo
    Cross-section of human skin with hair follicle, digital illustration.
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration — Stock Photo
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Human brain with highlighted precentral gyrus, computer illustration. It is located in the posterior frontal lobe and is the site of the primary motor cortex, the Brodmann area 4. — Stock Photo
    Human brain with highlighted precentral gyrus, computer illustration. It is located in the posterior frontal lobe and is the site of the primary motor cortex, the Brodmann area 4.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Human brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow). — Stock Photo
    Human brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow).
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration. — Stock Photo
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration.
    Medical chart with the signs and symptoms of kidney cancer — Stock Photo
    Medical chart with the signs and symptoms of kidney cancer
    Human nervous system, computer illustration — Stock Photo
    Human nervous system, computer illustration
    Female body with visible adrenal glands, digital illustration. — Stock Photo
    Female body with visible adrenal glands, digital illustration.
    White human brain model on red background, digital illustration. — Stock Photo
    White human brain model on red background, digital illustration.
    Male body with visible brain, digital illustration. — Stock Photo
    Male body with visible brain, digital illustration.
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration. — Stock Photo
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration.
    Illustration of blue silhouette of obese woman with highlighted adrenal glands. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted adrenal glands.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Male body with visible brain, digital illustration. — Stock Photo
    Male body with visible brain, digital illustration.
    Digital illustration of senior man anatomy showing adrenal gland tumour. — Stock Photo
    Digital illustration of senior man anatomy showing adrenal gland tumour.
    Male body nervous system, computer illustration. — Stock Photo
    Male body nervous system, computer illustration.
    Illustration of transparent blue silhouette of male body with colored adrenal glands. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored adrenal glands.
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    Illustration of transparent gray silhouette of male body with colored adrenal glands. — Stock Photo
    Illustration of transparent gray silhouette of male body with colored adrenal glands.
    Female body with visible adrenal glands, digital illustration. — Stock Photo
    Female body with visible adrenal glands, digital illustration.
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow) — Stock Photo
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow)
    White human brain model on plain background, digital illustration. — Stock Photo
    White human brain model on plain background, digital illustration.
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    Human brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow). — Stock Photo
    Human brain anatomy, 3D illustration. Lobes of the brain are colour-coded: frontal lobe (Pink), parietal lobe (blue), occipital lobe (orange) and temporal lobe (yellow).
    Female body with visible adrenal glands, digital illustration. — Stock Photo
    Female body with visible adrenal glands, digital illustration.
    Colored brain in female body, computer illustration. — Stock Photo
    Colored brain in female body, computer illustration.
    Female body with adrenal glands cancer, computer illustration. — Stock Photo
    Female body with adrenal glands cancer, computer illustration.
    Illustration of female silhouette with highlighted adrenal glands. — Stock Photo
    Illustration of female silhouette with highlighted adrenal glands.
    Female body silhouette with visible nervous system, computer illustration. — Stock Photo
    Female body silhouette with visible nervous system, computer illustration.
    Illustration of silhouette of obese man with visible adrenal glands. — Stock Photo
    Illustration of silhouette of obese man with visible adrenal glands.
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    Illustration of transparent blue silhouette of male body with colored adrenal glands. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored adrenal glands.
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain. — Stock Photo
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain.
    Illustration of senior man silhouette with visible adrenal glands. — Stock Photo
    Illustration of senior man silhouette with visible adrenal glands.
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration. — Stock Photo
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration.
    Pyramidal neurons of human brain cortex, computer illustration — Stock Photo
    Pyramidal neurons of human brain cortex, computer illustration
    Human body with detailed hypothalamus in brain, computer illustration. — Stock Photo
    Human body with detailed hypothalamus in brain, computer illustration.
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration. — Stock Photo
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration.
    Digital illustration of adrenal glands in senior man body. — Stock Photo
    Digital illustration of adrenal glands in senior man body.
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration. — Stock Photo
    Abstract male silhouette with visible brain and nerves of nervous system, computer illustration.
    Illustration of transparent blue silhouette of male body with colored adrenal glands. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored adrenal glands.
    Male body with adrenal glands, computer illustration. — Stock Photo
    Male body with adrenal glands, computer illustration.
    Transparent male silhouette with visible adrenal glands, computer illustration. — Stock Photo
    Transparent male silhouette with visible adrenal glands, computer illustration.
    Adrenal glands in abstract human body, digital illustration. — Stock Photo
    Adrenal glands in abstract human body, digital illustration.
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    Female body with visible adrenal glands, digital illustration. — Stock Photo
    Female body with visible adrenal glands, digital illustration.
    Digital illustration of adrenal glands in senior man body. — Stock Photo
    Digital illustration of adrenal glands in senior man body.
    Abstract female silhouette with visible brain and spinal cord of nervous system, computer illustration. — Stock Photo
    Abstract female silhouette with visible brain and spinal cord of nervous system, computer illustration.
    Illustration of senior woman silhouette with colored adrenal glands on white background. — Stock Photo
    Illustration of senior woman silhouette with colored adrenal glands on white background.
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Anatomy of male body with visible brain, digital illustration. — Stock Photo
    Anatomy of male body with visible brain, digital illustration.
    Female body with visible brain, computer illustration. — Stock Photo
    Female body with visible brain, computer illustration.
    White human brain model on plain background, digital illustration. — Stock Photo
    White human brain model on plain background, digital illustration.