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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
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
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.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
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.
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
Focal nodular hyperplasia (FNH) is a benign liver lesion that is composed of a proliferation of hyperplastic hepatocytes surrounding a central stellate scar. Typically, FNH is a solitary lesion that is more commonly seen in women.
Host cells with spores (mold) are inside wood under the microscope for education.
DNA A-T Pair
Colorful chain of amino acids or bio molecule called proteins - 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
Covid-19 Coronavirus Variants Omicron Delta Gamma Beta Alpha Pandemic Virus Disease Mutation
3D cartoon and molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background
Shiny artificial molecular structure in many colors. Horizontal composition, isolated on black background.
Science background with molecule or atom
Photomicrograph of rotifer. Rapidly rotating cilia at top of head, internal organs visible. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
Cell membrane structure background, 3d rendering. Digital drawing.
Human Morula Cell, Solid Ball of Cells Resulting from Division
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.
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
3D cartoon and Gaussian surface models, PDB 5fwk, white background
Particles, medical concept
Acetylcholine receptors in the lipid layer of cell membrane.
Cells in the body examined by endoscope
Free Images: "bestof:PDB 1uun EBI.jpg Membrane and cell surface proteins and peptides Leukocidin-like Leukocidin-like Porin MspA Porin MspA EBI License 1uun November 16 2008 Porin"
Adherens Junctions structural proteins-LangNeutral.svg
Porin.seutukunta.sijainti.2008.svg
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portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
Insulin glucose metabolism ZP (ru).svg
Scheme facilitated diffusion in cell membrane-ca.svg
Scheme simple diffusion in cell membrane-pl.svg
Cellular tight junction keys.svg
Insulin glucose metabolism ZP-ca.svg
Plant cell structure svg 2.svg
Scheme sodium-potassium pump-pl.svg
Scheme secundary active transport-heb.svg
Portret van Jan van Huysum Rijksmuseum SK-A-5008.jpeg.jpg
Thyroid hormone synthesis.svg
PDB 1uun EBI.jpg
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