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orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
A ball and stick model of Human Insulin. Isolated on black.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Bilayer Lipid Membrane - 3d rendered image of Cell Membrane Phospholipid Structure, Phospholipid bilayer of the cell membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
Chain of amino acid or bio molecules called protein - 3d illustration
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
Amitriptyline is used as an antidepressant and antimigraine drug. It blocks sodium channels on neuronal membrans. Sodium channels generate and propagate action potentials in neurons and muscle. Source: PDB entry 6AGF
Cells in the body examined by endoscope
3D cartoon and Gaussian surface models, PDB 5fwk, white background
H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy
Biological protein and molecule, 3d rendering. 3D illustration.
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Host cells with spores (mold) are inside wood under the microscope for education.
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.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
A ball and stick model of a Polytetrafluoroethylene molecule, also known as PTFE or most commonly Teflon. It is a polymer consisting of only carbon and fluorine atoms. It is used as a non-stick coating for cookware, as a lubricant, and it is also used to contain highly reactive chemicals as it is extremely non-reactive.
Spike glycoprotein homotrimer, a main target for neutralization antibody, to bind its receptor, ACE2, and mediate membrane fusion and virus entry. 3D cartoon and Gaussian surface models, white background.
Shiny artificial molecular structure in many colors. Horizontal composition, isolated on black 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
Chain or ribbon diatom, a type of algae.
Biological protein and molecule, 3d rendering. 3D illustration.
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.
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
Evolution and Mystery of Life: Mollusks Living in Water
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
plant Soya Stem C.S. under light mircoscope with white background
Acetylcholine receptors in the lipid layer of cell membrane.
3d rendering of Easter eggs background
Free Images: "bestof:PDB 2oar EBI.jpg Membrane and cell surface proteins and peptides Gated mechanosensitive channel Gated mechanosensitive channel Gated mechanosensitive channel"
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