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A ball and stick + ribbons model of Serotonin Acetyltransferase, an enzyme active in the production of serotonin in the body. Serotonin has an important role in controling mood, anxiety, anger and aggression as well as appetite and sleep.

Science background with molecule or atom

3d helix chromosome or Dna structure, technology science background. 3d render illustration

Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.

Tryptophan or Trp is an alpha-amino acid that is used in the biosynthesis of proteins, 3d illustration

A conceptual image of an abstract network of multi-coloured organic strands arranged in a non regular pattern all connected together in a complex manner. The network is made from smaller multi-coloured squares and polyhedra, in vivid colours against a pastel toned background. Shows background and foreground elements to the structure.

Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.

CRISPR-Cas9 genome editing enzyme, 3d illustration

Dna structure on science background. 3d illustration

Cells in the body examined by endoscope

Amyloid plaques on axons of neurons affected by Alzheimer's disease

Neurons Concept. 3D Render

Stratified flat epithelium under microscope

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

Liposome encapsulation for nanomedicine drug delivery neurodegenerative disease 3d rendering

Human brain MRI.

DNA strand and brain. 3D rendering

Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway. Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.

virus and DNA with magnifying glass. 3d illustration

Candida Auris Cells. 3D Render

3d render of a typical neuron

Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin

PAPS Smear study of a young women under microscopy showing Atrophic changes in uterus which is unusual at young age.

Antibodies Attacking a Neuron. Concept of Autoimmune Neurologic Diseases

3d rendering of Sensory neurons or afferent neurons, are nerve cells that receive stimuli from sensory organs and send messages to the nervous system for processing.

Artificial intelligence human brain made with wires.

Filamentous algae are single algae cells that form long visible chains, threads, or filaments.

Evolution and Mystery of Life: Mollusks Living in Water

Neural network with one artificial connection in nanotechnology concept.

3D rendering of microscopic molecular structure

Free Images: "bestof:The Serotonin Neuron.gif en Part of a series of slides created by the National Institute on Drug Abuse about MDMA 2007-01 http //www drugabuse gov/publications/..."

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Edward_Savage_-_The_Washington_Family_-_Google_Art_Project.jpg

Dutch barn, Lancaster County, Pennsylvania Arthur Rothstein.jpg

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Screw_picket_Fort_Belvoir.tif

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Converting Digital Information into Braille (5883951271).jpg

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Railway Express Agency lady 8d31602a.tif.tiff

Seleucus crater AS15-M-2621.jpg

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The Galactic Center.jpg

SLNSW 13194 Women volunteer workers doing up clothing parcels at the ACF rooms taken for Australian Comforts Fund.jpg

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Lower Klamath Lake marsh.jpg

Crosby Beach.JPG

Deli sandwiches.jpg

Tomato (1).jpg

Walking in a shopping mall.jpg

Observation deck on shoreline.jpg

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Women preparing food (2).jpg

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Polemonium vanbruntiae FWS-1.jpg

Tobias and the Angel - Filippino Lippi.jpg

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Polemonium vanbruntiae FWS-1-4x3.jpg

Alaska islands and ocean visitor center bike racks.jpg

White_House_Green_Room,_07/15/1952.jpg

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1941_sledding_Haverhill_Massachusetts_by_JackDelano_LC_8c04262u.jpg

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Borneo Topography.png

Gardens at longwood.jpeg

Kasatochi Island, Alaska Maritime NWR.jpg

Aerial view of the trans Alaska oil pipeline.jpg

Designated wilderness marsh with oyster beds.jpg

Dagestani man and woman.jpg

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"WIN"_football.jpg

Green_Room_of_the_White_House,_09/1948.jpg

Natural areas stone formation.jpg

Bill Stagg turning up his beans, Pie Town, New Mexico. He will next pile them for curing (LOC).jpg

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