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Chemical formula of Progesterone. Close-up.

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

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

Cortisol is a steroid hormone, in the glucocorticoid class of hormones. When used as a medication, it is known as hydrocortisone. It is produced in many animals, mainly by the zona fasciculata of the adrenal cortex in the adrenal gland.

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.

Calcium carbonate chip in chemical watch glass with molecular structure on white laboratory table. Top view

Chemical formula of Testosterone on a blackboard

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.

$Model of DNA Base Pair adenine (A) and thymine (T)\n\nFind more molecules in the Lightbox [url=http://www.istockphoto.com/search/lightbox/7500191][i] 'World of Molecules'[/i][/url], or contact me on customized design/rendering of any molecules in 3D (see some examples below). \n\n[img]http://www.drugmodel.com/360/superglassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/capsule900.jpg[/img] \n[img]http://www.drugmodel.com/360/glassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/heart900.jpg[/img] \n[img]http://www.drugmodel.com/360/viruskiller900.jpg[/img] \n[img]http://www.drugmodel.com/360/mesh900.jpg[/img] \n[img]http://www.drugmodel.com/360/cartoon900.jpg[/img] \n[img]http://www.drugmodel.com/360/photo900.jpg[/img] \n[img]http://www.drugmodel.com/360/ovoid900.jpg[/img] \n[img]http://www.drugmodel.com/360/swirlcone900.jpg[/img] \n[img]http://www.drugmodel.com/360/super900.jpg[/img] \n[img]http://www.drugmodel.com/360/glowing900.jpg[/img]$

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

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.

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

Methanol, also known as methyl alcohol among others, is a chemical with the formula CH3OH (often abbreviated MeOH).

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

$Organic Carnauba Wax in Chemical Watch Glass with molecular structure place next to beaker and \nPlatycerium stemaria fern. Chemical ingredient used in cosmetic industry.$

Molecular structure of Sulfur dioxide SO2

Proliferating cell nuclear antigen (PCNA) is a DNA clamp that acts as a processivity factor for DNA polymerase δ in eukaryotic cells and is essential for replication. PCNA is a homotrimer and achieves its processivity by encircling the DNA, where it acts as a scaffold to recruit proteins involved in DNA replication, DNA repair, chromatin remodeling and epigenetics. 3D cartoon and Gaussian surface models, chain instance color scheme, based on PDB 3wgw, white background.

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.

Acetyl-CoA, acetyl coenzyme A molecule. Key coenzyme in fatty acid biosynthesis, Krebs cycle, citric acid cycle. Molecular model. 3D rendering. Illustration

Cannabidiolic acid or CBDA cannabinoid molecule. 3D rendering. Atoms are represented as spheres with conventional color coding.

Free Images: "bestof:Tert-butylamine.svg Skeletal chemical diagram of tert-butylamine Image 2-Butanol svg 2007-04-15 Ryanaxp public domain <gallery>File Tert-butylamine meth svg</..."

1,1,2-Trichloro-1,2,2-trifluoroethane.svg

International Data Encryption Algorithm InfoBox Diagram.svg

Computer Scintillation Spectrometer Setup-de.svg

Simple Scintillation Spectrometer Setup-de.svg

Bacteria morphologic forms simplified.svg

Jarvis march convex hull algorithm diagram.svg