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Melatonin is a hormone, released primarily by the pineal gland, that regulates the sleep–wake cycle. 3D ball-and-stick model, white background
Steel pipelines in the Refinery
Dysprosium, Holmium, Erbium on the periodic table of the elements on black blackground,history of chemical elements, represents the atomic number and symbol.,3d rendering
Aerial view of cement factory in industrial production area. Smoke is coming out of the chimney. It is a beautiful sunny autumn day and the leaves in the trees are multi colored. The factory is located close to agricultural fields.
Dopamine ( DA) hormone molecule. Molecular model. 3D rendering. 3D illustration
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.
Chemical formula of Cortisol
Molecular structure of Acetylcysteine(also known as N-acetylcysteine or NAC). C5H9NO3S. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Steel pipelines in liquid natural gas storage station
Structural model of Progesterone on the blackboard.
Petrochemical plant on a cloudy day
Neodymium, Promethium, Samarium on the periodic table of the elements on black blackground,history of chemical elements, represents the atomic number and symbol.,3d rendering
A ball and stick model of Dopamine. It is a neurotransmitter affecting behaviour, sleep, learning, perception of pain, mood and motivation.
Anthracene molecule. It is polycyclic aromatic hydrocarbon PAH. Molecular model. 3D rendering. Illustration
Petrochemical plant with many large storage tanks, pipelines and chimneys, surrounded with green forest, viewed from above.
Glucosamine (C6H13NO5) is an amino sugar. treatment for osteoarthritis. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.
UK petrochemical complex with chimneys and oil storage tanks at Immingham
Aerial view of big chemical plant with long warehouse. Production of different nitrogen fertilizers.
Inside protein molecule
Selenium, Bromine, Krypton on the periodic table of the elements on black blackground,history of chemical elements, represents the atomic number and symbol.,3d rendering
Periodic table detail for the elements hafnium and tantalum. Image uses an altered public domain periodic table as the source document. Part of a series covering all the elements
Bisphenol A, BPA, C15H16O2 molecule. It is precursor to polycarbonate plastics and epoxy resins. Molecular model. 3D rendering. 3D illustration
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Serotonin neurotransmitter molecule. Serotonin happiness hormone. Skeletal formula. Maintaining serotonin balance for mental well-being, emotional stability, satisfaction, good mood, and human health
Chemical industry factory.
Chemical formula of Testosterone on a blackboard
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Structural chemical formula and molecular structure of acetone. Formule C3H6O. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.
Top view of industrial piping system,Aerial top view natural gas pipeline, gas industry, gas transport system, stop valves and appliances for gas pumping station.
Free Images: "bestof:Aliflurane structure.svg Chemical structure of aliflurane Hoechst Compound 26; 26-P; 2-chlorotetrafluorocyclopropyl methyl ether Own 11 49 28 December 2014 UTC"
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