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A ball and stick model of Human Insulin. Isolated on black.

orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).

Nucleosome, molecular model. 3D illustration. The nucleosome consists of a DNA double helix wrapped around a core of histone proteins.

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

Proteasomes are molecular machines for breaking down proteins called proteolysis, only target proteins that have been marked for destruction called ubiquitin to the target protein, 3d rendering

Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway. Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.

DNA close-up, DNA Molecule Model, DNA Strands, DNA animation

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.

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

Structure of novel coronavirus spike receptor-binding domain (pink) complexed with its receptor ACE2 (blue), surface modeel, white background

plant Leaf of Mentha Haplocalyx T.S. under light mircoscope with white background

Vitamin Coenzyme Q10 with chemical formula on a pink background. To prevent aging. Pills and medicine

DNA Helix - 3d rendered image. Genetic research concept. Complex spiral structure illustration. Medical, science, genetic biotechnology, gene cell, chromosome idea. DNA strands on dark background . Science nanotechnology.

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

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.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background

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.

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

Liver Fluke Section under light microscope with white background

C-reactive protein (CRP), an annular (ring-shaped), protein found in blood plasma. It is thought to assist in complement binding to foreign and damaged cells and enhances phagocytosis by macrophages.

This footage shows the translation initiation complex, which consists of the ribosomal small subunit, transfer RNA (tRNA), and translation initiation factors. The golden ribbon represents the RNA.

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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3D cartoon and Gaussian surface models, PDB 4cmh, white background

Free Images: "bestof:PDB 1dul EBI.jpg All alpha proteins Signal peptide-binding domain Signal peptide-binding domain Signal peptide-binding domain Signal sequence binding protein"

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Megachile_species,_f,_15266b06,_face,_kenya_2014-08-06-16.10.44_ZS_PMax.jpg

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bee_small_red_tip,_f,_chile,_face_2014-08-08-17.31.24_ZS_PMax.jpg