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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
The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
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.
A ball and stick + ribbons model of beta-secretase - a protein that is important in forming healthy peripheral nerve cells, but is also involved in the onset of Alzheimer's disease.
Nourish hair of shampoo or serum. Repair damaged hair concept, 3d rendering.
background
Zearalenone or ZEN or RAL is a potent estrogenic metabolite. 3d illustration
The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor  has a strong effect  on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
Cell membrane cholesterol is shown in pink. 3D cartoon and Gaussian surface models, PDB 7rpk, white background.
Cells in the body examined by endoscope
Coxsackie virus internal structure, 3d illustration set isolated on white
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.
Arabidopsis thaliana pollen grains in anther, fluorescent staining of DNA by Hoechst 33342 and modelling by  surface rendering software.
3D Rendered Illustration, visualization of Neurons firing neurotransmitters in the synaptic gap.
The vascular endothelial growth factor (red) promotes blood vessel formation (angiogenesis). It affects cancer proliferation, wound healing and other physiological processes.  Activation by VEGF leads to the dimerization of the VEGFR monomers. Source: PDB entries, 5t89, 2m59, 3hng.
H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy
3D cartoon and Gaussian surface models, PDB 6kxs, white background
A ball-and-stick plus ribbons 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.
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
DNA A-T Pair
Biological protein and molecule, 3d rendering. 3D illustration.
Neuron system hologram - 3d rendered image of Neuron cell network on black background. Hologram view  interconnected neurons cells with electrical pulses. Conceptual medical image.  Glowing synapse.  Healthcare concept.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Close-up shooting of a green agate stone mineral surface isolated on white background. Its a macro shot shows nature beautiful details with back lit. Agate is a kind of natural gemstone. Abstract pattern. Good for Wallpaper texture background. Turquoise, blue
3D cartoon and Gaussian surface models, chain id color scheme, PDB 3omv, white background
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Acetylcholine receptors in the lipid layer of cell membrane.
plant Leaf of Mentha Haplocalyx T.S. under light mircoscope with white background
Free Images: "bestof:Beta-2 adrenergic receptor.png Crystal structure of the beta-2 adrenergic receptor ADRB2 with its inverse agonist carazolol Derived from the 2 4 Ã… crystal"
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
A 276575 structure.svg
ZK 216348 structure.svg
RU 24858 skeletal.svg
Octahydrophenanthrene-2,7-diol SEGRA.svg
OUP-16.svg
8-OH-DPAT.svg
UnitCell.svg
Picture Graph.svg
Comparison of properly and improperly scaled picture graph.svg
Improperly scaled picture graph.svg
Crystal facet formation.svg
P450cycle.svg
marcelosilksantos-----vector-estampa-camiseta-vetor-em-corel-draw-vetorizao-imagens-vetorizadas-silk-screen-serigrafia-branco-e-preto-formandos--terceiro--corel---95_29585903434_o.jpg
Beta-2 adrenergic receptor.png
Beta2Receptor-with-Gs.png
HLA-Cw4.png
1FYT T-cell receptor and HLA class II complex.png
Interleukin-1-receptor+IL-1beta 1ITB.png
TNFB+TNFR 1TNR.png
Beta adrenergic receptor kinase.JPG
PDB 1omw EBI.jpg
PDB 1ym7 EBI.jpg
PDB 1bak EBI.jpg
RXRalpha-alitretinoin.png
HLA-B*5101.png
HLA-A1.png
Estrogen receptor beta.png
Estrogen receptor beta 1U3S.png
Ag3VO4 beta crystal structure.png
TNFa Crystal Structure.rsh.png
IL6 Crystal Structure.png
Crystal Structure of FGF10-FGFR2b Complex-1NUN.png
IL6 Crystal Structure.rsh.png
GP130 Crystal Structure.rsh.png
LIF Crystal Structure.rsh.png
Phenoxybenzamine.png
Crystal Structure of the Ku Heterodimer - 15.png
Crystal Structure of the Ku Heterodimer - 16.png
Crystal Structure of the Ku Heterodimer - 17.png
Crystal Structure of the Ku Heterodimer - 2.png
Crystal Structure of the Ku Heterodimer - 20.png
Crystal Structure of the Ku Heterodimer - 22.png
Crystal Structure of the Ku Heterodimer - 23.png
Crystal Structure of the Ku Heterodimer - 26.png
Crystal Structure of the Ku80 - 11.png
Crystal Structure of the Ku Heterodimer - 30.png
Crystal Structure of the Ku Heterodimer - 31.png
Crystal Structure of the Ku Heterodimer - 33.png
Crystal Structure of the Ku Heterodimer - 36.png
Crystal Structure of the Ku80 - 37.png
Crystal Structure of the Ku80 - 38.png
Crystal Structure of the Ku80 - 39.png
Crystal Structure of the Ku80 - 40.png
Crystal Structure of the Ku70 - 41.png
Crystal Structure of the Ku70 - 42.png
Crystal Structure of the Ku70 - 43.png
Crystal Structure of the Ku Heterodimer - 35.png
CTLA4 Crystal Structure.rsh.png
CTLA4 Crystal Structure.jpg
Estrogen receptor+lasofoxifene.png
Steroid receptor.png
Beta-PdCl2.png
FullStructureV2.png
TCR-MHC II.png
Rhodopsin 3D.jpeg
Interleukin-1b crystal stru.jpg
E coli beta clamp 1MMI.png
GM-CSF+receptor 3cxe.png
CGRP-receptor+RAMP1 3N7P.png
CD86 structure.gif
1FMK (c-Src).png
CD4+MHCII 1JL4.png
1FG9 IFNG IFNG.png
CD32ray.png
Copper(I)-iodide-(beta)-3D-ionic.png
SRX246 structure.png
Beta-quartz-CM-2D-polyhedra.png
Beta-sodium-metavanadate-xtal-1984-CM-3D-balls.png
Pd6Cl12-xtal-1996-CM-3D-balls.png
Pd6Cl12-xtal-1996-CM-3D-SF.png
PDB 1flt EBI.jpg
PDB 1qty EBI.jpg
PDB 1rv6 EBI.jpg
Beta-quartz-CM-2D-balls.png
Beta-sodium-borohydride-xtal-2007-3D-balls.png
Beta-sodium-borohydride-xtal-2007-3D-SF.png
Beta-sodium-metavanadate-xtal-1984-V-coordination-CM-3D-balls.png
Pd6Cl12-from-xtal-1996-CM-3D-ellipsoids.png
Betacrist.jpg
Beta-sodium-metavanadate-chain-from-xtal-1984-CM-3D-polyhedra.png
Beta-sodium-metavanadate-chain-from-xtal-1984-CM-3D-balls.png
1918 influenza virus hemagglutinin.png
PDB 2qr0 EBI.png
Copper(I)-iodide-(beta)-unit-cell-3D-balls.png
PDB 1snu EBI.jpg
Beta-octamolybdate-anion-from-xtal-3D-balls-A.png
Beta-octamolybdate-anion-from-xtal-3D-balls-B.png
Beta-octamolybdate-anion-from-xtal-3D-SF-B.png
Beta-octamolybdate-anion-from-xtal-3D-polyhedra-B.png
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