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ribonicleic acid chain from which the deoxyribonucleic acid or DNA is composed - 3d illustration

$Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.$

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

Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration

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.

Aerial view of loyster farm by Ardara, County Donegal - Ireland.

$Abs Virus - 3d rendered image like colorized scanning electron micrograph. Scene showing virus (yellow) emerging from infected cell.\nConcept of coronavirus that’s causing a global pandemic. Covid-19, Sars-cov-2 alpha, betta, gamma, delta, lambda variant, 2019-nCoV, Coronavirus.\nSEM, TEM, hologram view.$

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

neutrons electrons Network,Neuron system,Neurons cells 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

Fish gill C.S. under light microscope with white background

Chain of amino acid or biomolecules called protein - 3d illustration

Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.

Nerve growth factor (NGF) is a neurotrophic factor and neuropeptide primarily involved in the regulation of growth, maintenance, proliferation, and survival of certain target neurons. 3D cartoon and Gaussian surface models with differently colored chains, white background.

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. Purple

$The Raf/MEK/ERK (MAPK) propagates growth signals in the cell. Misregulation can lead to cancer.\nThe red dots on the active EGFR are phosphorylated tyrosines. PDB entries: 1egf, 1nql, 1m17, 2jwa, 3njp, 2gs6, 1gri, 1xd2, 3ksy, 5p21, 6xi7, 6q0j, 2y4i,$

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.

Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 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.

Microalgae under microscopic view, green algae, cyanobacteria, phytoplankton, diatom, algae mix collage 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.

B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background

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

Botulinum toxin (3d structure) which prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction. Infection with the bacterium causes botulism.

Surface photography of nature pattern Crystal shot for background.

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.

3d render of abstract connection background

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Rathong glacier from Dzongri La (pass) 1.jpg

Standing Paddleboarders and Rowers in Upper Newport Bay (Newport Beach, California).jpg

Building structure after natural disasters.jpg

Kern national wildlife refuge water control structure rehabilitation.jpg

Small black structure on narrow ground between ponds for wildlife observation and duck blind.jpg

Sunset seen from Arctic View in Finmark - Norway.jpg

Coffre-fort troglodyte Roque Saint-Christophe.jpg

Ross s Goose Missisquoi Wildlife Refuge Lake Champlain.jpg

Black River Beach Neighborhood Center.jpeg.jpg

Gargouilles gargoyles Notre Dame de Paris.jpg

Fraxinus excelsior L. Frêne commun JdP.jpg

Bollard d'amarrage Vieux Port La Rochelle.jpg

Dipsacus laciniatus L. Cardère découpée JdP.jpg

Tyres on Preston Beach 2 (E37@WTW2013).JPG

Panoramic view of Miranda Park, Caracas.JPG