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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 cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background

Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 3D illustration.

Copper(II) sulfate with molecular structure. Chemical ingredient used in medical and public health issues.

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.

3D cartoon and Gaussian surface models, PDB 5fwk, 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.

3D rendering of biotinylated antibody, an engineered protein designed to bind to specific molecules. Biotin allows researchers to easily track and manipulate these antibodies.

Carbamide in Chemical Watch Glass with molecular structure. Chemical ingredient used in medical and public health issues.

The cytokin interleukin 11 (IL-11) plays an important role in autoimmune diseases, fibrotic complications, and solid cancers. Blocking IL-11 can extend lifespan and improve health.

Rendered coronavirus/2019-nCoV single-stranded RNA, built from experimentally determined Ebola virus crystal structure. Color symbols - bluewhite=carbon, pink=oxygen, lightblue=nitrogen, white=hydrogen, lavender=phosphorus

3D cartoon and molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background

A ribbons model of Human Insulin. Isolated on white.

Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange), that is aggregated to amyloid beta fibrils, which build up amyloid plaques.

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Nivolumab is an anti-cancer medication used to treat several types of cancer. 3D cartoon and molecular surface model, entity id color scheme, PDB 5ggr, white background

Guanine and Cytosine. Isolated on white. 3D Render.

Healthy natural ingredients containing vitamin B3 and minerals. Nutritious eating

Variety of seeds bowl on white quartz counter top

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Constant-k Filter Transmission Parameters.svg

Ketocarboxylic Acids General Formulae V.1.svg

Fixed-points theory and variance minimization (dynamic vibration absorber) (SVG).svg

Constant-k Filter Gain with Multiple Half-Sections.svg

Comparison of properly and improperly scaled picture graph.svg