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

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

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

$The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.$

Calcidiol molecule, also called calcifediol, major circulating metabolite of vitamin D3 produced in liver, 3D illustration

Close up of a Petri dish with yellow specimens in it

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

3d rendering of ubiquitin is attached to target proteins by a process called ubiquitination

Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view

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.

Liver Fluke Section under light microscope with white background

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

Urothelial carcinoma, high grade. High-grade tumors have an aggressive appearance under a microscope and are assumed invasive in the kidney or ureter.

Molecular model of insulin hormone, 3D illustration. It is produced by pancreas and takes part in glucose and lipid metabolism

3D realistically coloured hexagonal shapes of connected spheres, background with copy space. Futuristic illustration design template for scientific presentation. Molecular business, science, teamwork concept.

Honeycomb with honey on petri dish over white background

Close-up shot of a petri dish for checking clear zone an antibiotic in the laboratory.

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 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.

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.

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

Box of generic bisoprolol fumarate tablets and blister pack - white background. Bisoprolol is a beta blocker medication most commonly used for heart diseases.

Collagen protein molecule. Molecular model. 3D rendering. Illustration

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

$The shape of mitochondria has often been depicted as granular, but in reality there are individual differences in length and size. Recently, high-resolution microscopy has revealed the shape of mitochondria.\nThis image was not created by AI.$

A molecular model of Bisphenol A or BPA. It is a common building block in the production of many epoxy resins and plastics including polycarbonate plastic. As such it is present in a huge range of food packaging and household products. There are now concerns about its health effects, particularly its effect on children, infants and fetuses. Isolated on white.

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2-(dimethylamino)ethyl 2-(4-chlorophenoxy)acetate 200.svg

Muscarinic acetylcholine receptor M2-3UON.png