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    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.
    Surfers in Indian Ocean, Maldives — Stock Photo
    Surfers in Indian Ocean, Maldives
    Human brain with highlighted middle frontal gyrus, computer illustration. It is part of the prefrontal cortex of the frontal lobe. It is involved in language, learning and attention. — Stock Photo
    Human brain with highlighted middle frontal gyrus, computer illustration. It is part of the prefrontal cortex of the frontal lobe. It is involved in language, learning and attention.
    Conceptual illustration showing virus infecting neurons of brain. — Stock Photo
    Conceptual illustration showing virus infecting neurons of brain.
    Human brain with highlighted temporal gyri, computer illustration. This is showing the superior temporal (green), middle (red), and inferior (blue) gyri. They are involved in processing auditory information and encoding of memory. — Stock Photo
    Human brain with highlighted temporal gyri, computer illustration. This is showing the superior temporal (green), middle (red), and inferior (blue) gyri. They are involved in processing auditory information and encoding of memory.
    Large black-blotched stingray swimming over rocky seafloor near Cocos Island, Costa Rica — Stock Photo
    Large black-blotched stingray swimming over rocky seafloor near Cocos Island, Costa Rica
    Human nerve structure in cross section, digital illustration. — Stock Photo
    Human nerve structure in cross section, digital illustration.
    Women in traditional costumes — Stock Photo
    Women in traditional costumes
    Scenic view of mountain goats under trees in Kenai Fjords National Park, Alaska, United States of America — Stock Photo
    Scenic view of mountain goats under trees in Kenai Fjords National Park, Alaska, United States of America
    Cave homes in rock formations — Stock Photo
    Cave homes in rock formations
    Computer illustration of the basal ganglia, showing caudate nucleus (green), putamen (yellow), and lateral ventricles (blue). — Stock Photo
    Computer illustration of the basal ganglia, showing caudate nucleus (green), putamen (yellow), and lateral ventricles (blue).
    Glossy green palm leaf with central rib and paired fronds, close-up. — Stock Photo
    Glossy green palm leaf with central rib and paired fronds, close-up.
    Uzbekistan, Bukhara Province, Bukhara, Persian carpets hanging on shelves — Stock Photo
    Uzbekistan, Bukhara Province, Bukhara, Persian carpets hanging on shelves
    Midsection of man using laptop — Stock Photo
    Midsection of man using laptop
    Kyrgyzstan, Naryn region, Kochkor district, motorcycle parked next to yurt — Stock Photo
    Kyrgyzstan, Naryn region, Kochkor district, motorcycle parked next to yurt
    Sky Tower, a telecommunications and observation tower; Auckland, New Zealand — Stock Photo
    Sky Tower, a telecommunications and observation tower; Auckland, New Zealand
    Man hiking near the Harding Icefield Trail with the Kenai Mountains and an unnamed hanging glacier in the background, Kenai Fjords National Park, Kenai Peninsula, South-central Alaska, United States of America — Stock Photo
    Man hiking near the Harding Icefield Trail with the Kenai Mountains and an unnamed hanging glacier in the background, Kenai Fjords National Park, Kenai Peninsula, South-central Alaska, United States of America
    Baby brain and nervous system — Stock Photo
    Baby brain and nervous system
    Woman dancer in traditional costume — Stock Photo
    Woman dancer in traditional costume
    Glossy green palm leaf with central rib and paired fronds, close-up. — Stock Photo
    Glossy green palm leaf with central rib and paired fronds, close-up.
    Funny monkey sitting on jungle tree — Stock Photo
    Funny monkey sitting on jungle tree
    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
    Uzbekistan, Samarkand province, Samarkand, mosaic on facade — Stock Photo
    Uzbekistan, Samarkand province, Samarkand, mosaic on facade
    Caribbean electric ray laying on seafloor — Stock Photo
    Caribbean electric ray laying on seafloor
    A western honeybee pollinates a flower — Stock Photo
    A western honeybee pollinates a flower
    Green hummingbird sitting on sprig on blurred background — Stock Photo
    Green hummingbird sitting on sprig on blurred background
    Businesswoman holding disposable cup — Stock Photo
    Businesswoman holding disposable cup
    Illustration of blue silhouette of obese woman with highlighted brain. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted brain.
    Uzbekistan, Nurota tumani, sheep in the Kizilkum desert — Stock Photo
    Uzbekistan, Nurota tumani, sheep in the Kizilkum desert
    Crop horse head and shadow on asphalt — Stock Photo
    Crop horse head and shadow on asphalt
    Elderly man cooking french toast in industrial kitchen. — Stock Photo
    Elderly man cooking french toast in industrial kitchen.
    Rock formation known as Gada's Stack on Foula Island, Shetlands, Scotland, United Kingdom, Europe — Stock Photo
    Rock formation known as Gada's Stack on Foula Island, Shetlands, Scotland, United Kingdom, Europe
    Vegan tortilla with beefy crumble from pea protein and vegetables — Stock Photo
    Vegan tortilla with beefy crumble from pea protein and vegetables
    Red life preserver against blue wall — Stock Photo
    Red life preserver against blue wall
    Neural network connections and nerve cells, digital illustration. — Stock Photo
    Neural network connections and nerve cells, digital illustration.
    Uzbekistan, Xorazm Province, Xiva, Chiwa Fort, UNESCO World Heritage Site — Stock Photo
    Uzbekistan, Xorazm Province, Xiva, Chiwa Fort, UNESCO World Heritage Site
    Empty abandoned beer bottles on beach — Stock Photo
    Empty abandoned beer bottles on beach
    Brain coral and gorgonians — Stock Photo
    Brain coral and gorgonians
    Nerve cells and axon connections — Stock Photo
    Nerve cells and axon connections
    Maya woman in Quetzaltenango — Stock Photo
    Maya woman in Quetzaltenango
    Sky with cloud while flying from Managua — Stock Photo
    Sky with cloud while flying from Managua
    Prague, Praga, Czech Republic, Europe — Stock Photo
    Prague, Praga, Czech Republic, Europe
    Retired man bites on a blade of grass during vacation. — Stock Photo
    Retired man bites on a blade of grass during vacation.
    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.
    Man fat biking on the Nabesna Road in Wrangell - St. Elias National Park and Preserve on a cloudy summer day in South-central Alaska, United States of America — Stock Photo
    Man fat biking on the Nabesna Road in Wrangell - St. Elias National Park and Preserve on a cloudy summer day in South-central Alaska, United States of America
    Male nervous system in body silhouette, computer illustration. — Stock Photo
    Male nervous system in body silhouette, computer illustration.
    A Wachauer Marille (Wachau apricot) with leaves — Stock Photo
    A Wachauer Marille (Wachau apricot) with leaves
    Friends taking self portrait — Stock Photo
    Friends taking self portrait
    Waterfall near Landmannalaugar, Fjallabak Nature Reserve, South Central Iceland, Iceland — Stock Photo
    Waterfall near Landmannalaugar, Fjallabak Nature Reserve, South Central Iceland, Iceland
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    Illustration on black of silhouette of obese woman with highlighted brain. — Stock Photo
    Illustration on black of silhouette of obese woman with highlighted brain.
    Woman looking away against flowering tree — Stock Photo
    Woman looking away against flowering tree
    Old house on city street in summer day in San Francisco, USA — Stock Photo
    Old house on city street in summer day in San Francisco, USA
    Uzbekistan, Samarkand province, Samarkand, ornate interior view — Stock Photo
    Uzbekistan, Samarkand province, Samarkand, ornate interior view
    Traditional cemetery in Quetzaltenango — Stock Photo
    Traditional cemetery in Quetzaltenango
    Tern Lake reflecting Kenai Mountains — Stock Photo
    Tern Lake reflecting Kenai Mountains
    Medical illustration of silhouette of senior woman with highlighted brain on black background. — Stock Photo
    Medical illustration of silhouette of senior woman with highlighted brain on black background.
    Colorful houses and bars, Cais dos Botiroes. Aveiro, Because of the many channels Aveiro is called the venice of Portugal. Europe, Southern Europe, Portugal — Stock Photo
    Colorful houses and bars, Cais dos Botiroes. Aveiro, Because of the many channels Aveiro is called the venice of Portugal. Europe, Southern Europe, Portugal
    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
    Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. South-central Alaska; Anchorage, Alaska, United States of America — Stock Photo
    Northern Hawk Owl (Surnia ulula), known for sitting on the highest perch possible while looking for prey such as voles moving below. South-central Alaska; Anchorage, Alaska, United States of America