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B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background

plant Zea Stem C.S. under light mircoscope with white background

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

Molecular model of atorvastatin or Lipitor

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.

Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration

Fictitious molecule model inside red and blue pill isolated on white.

3D cartoon and Gaussian surface models. PDB 2aai, white background.

Carbon Atom Bohr model with proton, neutron and electron. 3d illustration. Science and Chemical Concept rendering image.

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

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.

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Skin cell background with cosmetics concept, 3d rendering. 3D illustration.

Open capsule or pill with molecular structure. Nanotechnology concept

brown fat cell also called brown adipose tissue side to side with white fat cell 3d rendering

Molecular structure of Sulfur dioxide SO2

Science background with molecule or atom

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.

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background

Tetradecylthioacetic acid molecule. 3D rendering. Atoms are represented as spheres with conventional color coding.

A ball and stick model of the common sugar sucrose.

The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor has a strong effect on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.

Conceptual background with colourful spheres positioned in tension.

Free Images: "bestof:Lipid peroxidation-it.png Radical chain reaction mechanism of lipid peroxidation italian translation Image Lipid peroxidation svg 2007-02-28 Tim Vickers"

Reduction of lipid radical by α-Tocopherol.svg

Cell membrane detailed diagram blank.svg

Beta oxidation of unsaturated fatty acid (zh-cn).svg

Phospholipids aqueous solution structures-hr.svg

Enolate aldol formation mechanism-fr.svg