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A ball and stick model of N,N-Diethyl-meta-toluamide, commonly known as DEET. The most common active ingredient in insect repellents. Isolated on white.
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
Science background with molecule or atom
plant Zea Stem C.S. under light mircoscope with white background
Melatonin is a hormone, released primarily by the pineal gland, that regulates the sleep–wake cycle. 3D ball-and-stick model, white background
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
A molecular model of Bisphenol A or BPA.  It is a common building block in the production of many epoxy resins and plastics including polycarbonate plastic. As such it is present in a huge range of food packaging and household products. There are now concerns about its health effects, particularly its effect on children, infants and fetuses.   Isolated on white.
Tafamidis is a medication used to delay loss of peripheral nerve function in adults with familial amyloid polyneuropathy. 3d illustration
Lily leaf c.s. under microscope
Chemical formula of Estrogen
Phenol in old glass bottle on a sheet of paper with chemical formulae (selective focus)
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Glucosamine (C6H13NO5) is an amino sugar. treatment for osteoarthritis. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.
Molecular structure of Sulfur dioxide SO2
Algaes under microscopic view
Texture pattern on marble of stone surface of agate slice.
Dopamine ( DA) hormone molecule. Molecular model. 3D rendering. 3D illustration
Chemical formula of Aldosterone
Neohalicholactone is unusual fatty acid metabolites having a cyclopropane ring and a nine-membered lactone. 3d illustration
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Water (Molecular formula: H2O) is a clear, odorless, tasteless liquid that is essential for most animal and plant life. Chemical structure model: Ball and Stick. 3D illustration.
Rotten food
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Laboratory assistent at work
Backgrounds of Characteristics  of Bacteria and Fungi  for education in Microbiology laboratory.
Inside protein molecule
Prostaglandin D2 or PGD2 is a prostaglandin that binds to the receptor PTGDR as well as CRTH2. 3d illustration
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Free Images: "bestof:Eperisone.png chemical structure of eperisone Own 13 38 21 November 2008 UTC Edgar181 Piperidines Muscle relaxants"
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