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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.
Dna structure on science background. 3d illustration
Artificial molecular structure in many colors. Horizontal composition, isolated on white background.
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
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.
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Definition of Enzyme in dictionary
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
plant Leaf of Nerium indicum T.S. under light mircoscope with white background
Cell membrane and biology, biological concept, 3d rendering. Computer digital drawing.
Cells in the body examined by endoscope
DNA mutation, a mutation is a change in a DNA sequence, mutations can result from DNA copying mistakes made during cell division.
Abstract Genetics Disease - 3d rendered image.
3D cartoon and Gaussian surface models, PDB 6gu2, white background
DNA Helix - 3d rendered image. Genetic research concept. Complex spiral structure illustration. Medical, science, genetic biotechnology, gene cell, chromosome idea. DNA strands on dark background . Science nanotechnology.
PETase is a bacterial enzyme that breaks down PET-plastic to monomeric molecules. The whole bacterial degradation process yields terephtalic acid and ethylene glycol, which are environmentally harmless.
Liver Fluke Section under light microscope with white background
Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 3D illustration.
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.
Microalgae under microscopic view, green algae, cyanobacteria, phytoplankton, diatom, algae mix collage background
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, chain id color scheme, PDB 2y73, white background
Abstract technological design of an artificial molecular structure in many colors. Horizontal wide composition.
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.
3d Render Transparent Molecule on Gradient Green Background, Science and Medicine Concept, (Depth Of Field)
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.
This computer-generated image vividly illustrates the invasive Group A Streptococcal bacteria, as they would appear under a microscope. This visual representation helps to understand the microscopic world of Group A Streptococcus and its potential to cause serious diseases.
Halofantrine is a drug used to treat malaria. Halofantrine's structure contains a substituted phenanthrene, and is related to the antimalarial drugs quinine and lumefantrine. 3d illustration
Golden oil molecules. Isolated on white background. 3D Render
Free Images: "bestof:Allyl,homo,doubly.png en general structure of allylic homoallylic doubly allylic cmpds own Smokefoot 2010-07-07 replaces previous artwork Chemistry nomenclature"
Jean Pierre Théodore, baron de Wacquant-Geozelles (1754-1844) musée légion d'honneur.jpg
Pieter_Brueghel_the_Elder_-_The_Dutch_Proverbs_-_Google_Art_Project.jpg
Allylic resonance.svg
Allylic rearrangement reaction.svg
3-Bromopropene.svg
DFIG in Wind Turbine.svg
Allyl alcohol.svg
Carbodiimides General Structure V.1.svg
Heparin General Structure V.1.svg
Allylradical Structural Formulae V.1.svg
2C General Structure.svg
Diazirines.svg
Lithium borate.svg
Permanganate.svg
Silver bromate.svg
Strontium bromide.svg
Sulfonamide general.svg
Ketyl structure.svg
Carbapenems structure.svg
Levomilnacipran.svg
Prop-2-en-1-amine 200.svg
Diallyl sulfide.svg
5-MeO-DALT.svg
Imidic acid structure.svg
Xanthic acid structure.svg
Carboxylic Acid General Structure.svg
Carboxylic Acid General Structure V.1.svg
Vinyl Group General Structure.svg
Cellulose derivatives.svg
General struct arylcyclohexylamine.svg
Monothioacetal Structural Formula V.1.svg
Dithioacetal Structural Formula V.1.svg
Polylactid structure.svg
Tetronic Acid.svg
Prop-2-en-1-ol 200.svg
General struct benzylidene group.svg
General struct mesityl group.svg
General struct benzhydryl group.svg
General struct trityl group.svg
General struct phenethyl group.svg
General struct styryl group.svg
General struct cinnamyl group.svg
General struct alcohol group.svg
General struct thiol group.svg
General struct selenol group.svg
General struct tellurol group.svg
General struct thioketone group.svg
General struct selenoketone group.svg
General struct telluroketone group.svg
General struct aldehyde group.svg
General struct thioaldehyde group.svg
General struct selenoaldehyde group.svg
General struct telluroaldehyde group.svg
General struct thioether group.svg
Benzimidazolon Yellow.svg
Benzmidazolone Red.svg
Porphyrine General Formula V.1.svg
Satratoxin-H.svg
Sol-gel silicate bonds.svg
Succinic Acid (Lactonized).svg
Nitrite General Formulae V.1.svg
Ortho-Diradicals General Formulae V.1.svg
Meta-Diradicals General Formulae V.1.svg
Para-Diradicals General Formulae V.1.svg
Niagara_Falls_by_Fisher.JPG
Hydroxid Ion General Formulae V.1.svg
Berlin._Spandau._Citadel_033.JPG
Steroid-general.svg
Sphingolipid de.svg
1,2,5-Triazin (falsche Nomenklatur).svg
1,3,4-Triazin (falsche Nomenklatur).svg
1,4,5-Triazin (falsche Nomenklatur).svg
Horatio Gates at National Portrait Gallery.jpg
Horatio Gates at National Portrait Gallery crop.jpg
Binary tree in array.svg
New Persia Flag.svg
Weaubleau Structure outline v2.svg
Michel-Ange Houasse 001.png
GabrielDeAristizábalYEspinosa.jpg
CayetanoValdésYFloresJoséRoldánMartínez1847.jpg
piranesi_general_sections_three_previous_houses.jpg
Napoleon at the Battle of Rivoli.jpg
Philippoteaux_Felix_-_Bonaparte_a_la_bataille_de_Rivoli.jpg
Average prokaryote cell- en.svg
1658_van_der_Neer_Winter_Landscape_with_Skaters_anagoria.JPG
Monet,_Cattedrale_di_Rouen,_Weimar,_1894.jpg
C-di-GMP.svg
2SAT median graph.svg
Sir_Adrian_Carton_de_Wiart_by_Sir_William_Orpen.jpg
The_Triumph_of_David.jpeg
Bicentenario119.jpg
En qvindelig Figur, som staar ved en Seng, reder sit Haar (Christoffer Wilhelm Eckersberg) - Nationalmuseum - 180185.tif.tiff
Fantasy of the Alps (Carl Gustav Carus) - Nationalmuseum - 179389.tif.tiff
Anatomical_Man.jpg
The_Schooner_'Edith'_by_Thomas_Chidgey.jpg
John_Constable_-_The_Lock_(second_Foster_version).jpg
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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
Allyl,homo,doubly.png
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