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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

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

3d rendering of benzene molecules conjugated gold (Au) nanoparticles (NPs) on the black background

A molecular model of the plasticizer Dibutyl Phthalate or DBP. As a plasticizer it has been used in many products including adhesives, textiles, cosmetics and children's toys. There are now concerns about its health effects, particularly its effect on male health and behaviour. Isolated on white.

Microcrystalline wax with chemical formula on white laboratory table.

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.

Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration

Molecular structure of Acetone or dimethyl ketone

3d render of molecular structure of sulfuric acid isolated over white background Atoms are represented as spheres with color and chemical symbol coding: hydrogen(H) - blue, oxygen(O) - green, sulfur(S) - orange.

Halofantrine is a drug used to treat malaria. Halofantrine's structure contains a substituted phenanthrene, and is related to the antimalarial drugs quinine and lumefantrine. 3d illustration

3D realistically coloured hexagonal shapes of connected spheres, background with copy space. Futuristic illustration design template for scientific presentation. Molecular business, science, teamwork concept.

CD47 also known as integrin associated protein is a transmembrane protein that in humans is encoded by the CD47 gene. CD47 belongs to the immunoglobulin superfamily and partners with membrane integrins and also binds the ligands thrombospondin-1 and signal-regulatory protein alpha. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 2jjt, white background

Monosodium glutamate, MSG or sodium glutamate molecules. MSG is used in cooking as a flavor enhancer with an umami taste 3d rendering

3D rendering of microscopic molecular structure

Chemical formula of Testosterone on a blackboard

A molecular model of the flavonoid Quercetin. An antioxidant and anti-inflamatory, it is used as a nutritional suplement. It is commonly found in many fruits and vegetables and is a significant chemical component of tea. Isolated on white.

Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.

After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.

Molecular structure of Sulfur dioxide SO2

Glucosamine (C6H13NO5) is an amino sugar. treatment for osteoarthritis. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.

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Anthracene molecule. It is polycyclic aromatic hydrocarbon PAH. Molecular model. 3D rendering. 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.

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Pancuronium–acetylcholine comparison.svg