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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

Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy

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

A molecular model of a Ribosome. Ribosomes are present in the cells of all forms of life, from bacteria to humans. DNA is copied to RNA, and Ribosomes read the instructions encoded in RNA to build proteins. Ribosomes were first observed in the 1950s, but the detail of their complex structure wasn't known until the early 2000s.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 2y73, white background

A conceptual image of an abstract network of multi-coloured organic strands arranged in a non regular pattern all connected together in a complex manner. The network is made from smaller multi-coloured squares and polyhedra, in vivid colours against a pastel toned background. Shows background and foreground elements to the structure.

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.

Lily leaf c.s. under microscope

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer

Acetylcholine receptors in the lipid layer of cell membrane.

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.

SARS-CoV-2 ORF3a is a putative viral ion channel implicated in autophagy inhibition, inflammasome activation and apoptosis. 3D cartoon and Gaussian surface models, based on PDB 7kjr, white background.

plant Pine Stem C.S. under light mircoscope with white background

Cells and cancer cells,Microscopic image of cells, 3d rendering, division of cancer cell

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.

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.

Slice of natural crystal for patterns and textures use with high resolution.

Biological protein and molecule, 3d rendering. 3D illustration.

DNA A-T Pair

3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background

Bronchitis and alveolitis in lung of horse infected with equine influenza virus, 200x magnification.

ATP Synthase Protein - 3d rendered image. Medical microbiology concept. Structure and conformational states of the bovine mitochondrial ATP (Adenosine triphosphate) synthase. Chemical energy is synthesized in eukaryotic cells primarily. Hydrolase. Hologram view. HUD, FUI

p53 (blue) tagged with ubiquitin (yellow) is degraded into small peptides by a proteasome (violett). p53 prevents cancer formation and acts as a guardian of the genome. Mutations in the p53 gene contribute to about half of the cases of human cancer.

Rosai–Dorfman disease (RDD) is a rare proliferative histiocytic disorder of unknown etiology. RDD typically presents with generalized lymphadenopathy and polymorphic histiocytic infiltration of the lymph node sinuses; however, occurrences of extranodal soft tissue RDD may rarely occur when masquerading as a soft tissue sarcoma.

Characteristics of fungi living in wood as a group, are polyphyletic under the microscope for education.

Texture pattern on marble of stone surface of agate slice.

3D cartoon and Gaussian surface models, PDB 6gu2, white background

Computer generated abstract concept image of 3d spheres like metaphor of abstract business processes.

Free Images: "bestof:PDB 1af3 EBI.jpg Membrane and cell surface proteins and peptides Toxins membrane translocation domains Bcl-2 inhibitors of programmed cell death Bcl-2"

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