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Science background with molecule or atom

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.

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

Science or medical concept. Molecular structure on black background

Tryptophan or Trp is an alpha-amino acid that is used in the biosynthesis of proteins, 3d illustration

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

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

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

3D rendering of microscopic particles and bubbles

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.

Microcrystalline wax with chemical formula on white laboratory table.

From left to right: the NMDA and AMPA receptors transport calcium cations into neurons after being activated by the neurotransmitter glutamate and the GABA receptor (right) transport chloride anions after the activation by gamma aminobutyrate. PDB entries: 6wht, 3kg2, 6d6u

3d Render Transparent Molecule on Gradient Green Background, Science and Medicine Concept, (Depth Of Field)

Vitamin C is great antioxidant. 3D rendering.

Close-up shot of a petri dish for checking an antibiotic in the laboratory.

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

This computer-generated image vividly illustrates the invasive Group A Streptococcal bacteria, as they would appear under a microscope. This visual representation helps to understand the microscopic world of Group A Streptococcus and its potential to cause serious diseases.

A ball-and-stick molecular model of the hormone Orexin, also known as Hypocretin. Orexin is involved in the regulation of the sleep/wake cycle and it stimulates apetite, wakefulness and energy expenditure. It has been linked with Alzheimer's disease. Isolated on white.

3D cartoon and Gaussian surface models. chain id color scheme, PDB 5zjd, white background.

Hyaluronan, hyaluronic acid, HA, hyaluronate molecule, short fragment. Molecular model. 3D rendering. Illustration

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Molecule with biology and chemical concept, 3d rendering. Digital drawing.

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.

Cediranib cancer drug molecule. 3D rendering. Atoms are represented as spheres with conventional color coding.

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.

Free Images: "bestof:Alpha-D-glucosamine.png en wikipedia Maksim page en wikipedia Chemical structure of glucosamine in its alpha-D-glucosamine form created with ChemDraw Edgar181 1"

London Bus 236 at its terminus at Finsbury Park Station.jpg

Alex Martinez - baseball - UCLA Bruins.jpg

London Bus route 19 at Finsbury Park station terminus.JPG

Ocean Isle Beach NC Bridge over Intracoastal Waterway Jun 10.JPG

Farol da Barra Beach - Salvador, Brazil.JPG

Ocean Isle Beach NC Fishing Pier Jun 10.JPG

Crestone needle and lower south colony lake 2008.JPG

Krag-Jørgensen, Krag-Petersson, Jarman M1884 and Remington M1867.jpg