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Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Inside protein molecule
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Yohimbine(quebrachine), is an indole alkaloid. C21H26N2O3. Chemical structure model: Ball and Stick + Balls + Space-Filling. 3D illustration.
A ribbons model of Human Insulin. Isolated on white.
Ferric maltol iron deficiency drug molecule. 3D rendering. Atoms are represented as spheres with conventional color coding.
Structural model of Benzene molecule
Delta endotoxins (δ-endotoxins) are pore-forming toxins produced by Bacillus thuringiensis species of bacteria. They are useful for their insecticidal action and are the primary toxin produced by Bt corn. 3D cartoon and Gaussian surface models, chain instance color scheme, based on PDB 4d8m, white background.
3D realistically coloured hexagonal shapes of connected spheres, background with copy space. Futuristic illustration design template for scientific presentation. Molecular business, science, teamwork concept.
Molecule structure of nicotine
Molecular model of amylose, one of the two sugar components in starch
alien structure made of white spheres and flowing glass liquid, molecular, hi-tech concept, abstract design element
A ball and stick model of Human Insulin. Isolated on black.
Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration
Molecular structure of Water H2O
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
3D realistically coloured hexagonal shapes of connected spheres, background with copy space. Futuristic illustration design template for scientific presentation. Molecular business, science, teamwork concept.
Chemical molecule with blue background, 3d rendering. Computer digital drawing.
Molecular model of Adenosine triphosphate,  or Adenosine-5'-triphosphate (ATP)
Science background with molecule or atom
A ball and stick model of a molecule of Human Interferon. Interferons are proteins important in the working of the immune system and are produced in large numbers in the presence of viruses, bacteria, tumors and parasites.  Interferons are used in drugs to combat cancer, multiple sclerosis, hepatitis B and C and other diseases. Isolated on white.
3d rendering of benzene molecules conjugated gold (Au) nanoparticles (NPs) on the black background
High resolution 3d illustration.
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Molecular Structure. 3d Rendering
Biological protein and molecule, 3d rendering. 3D illustration.
Cancer Drug Molecule
Acetyl-CoA, acetyl coenzyme A molecule. Key coenzyme in fatty acid biosynthesis, Krebs cycle, citric acid cycle. Molecular model. 3D rendering. 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.
Free Images: "bestof:...Norfenefrine molecule spacefill.png Space-filling model of the norfenefrine molecule a sympathomimetic drug This image shows the R isomer Color code 505050"
barrelene-molecule-spacefill-model-895192.png
avobenzone-spacefill-model-molecule-884339.png
amiton-spacefill-molecule-chemical-876020.png
bapta-spacefill-model-molecule-895125.png
bay-k8644-molecule-model-calcium-903589.png
almitrine-respiratory-drug-molecule-872674.png
almitrine-respiratory-drug-molecule-872675.png
acetazolamide-diuretic-drug-molecule-872224.png
acetazolamide-diuretic-drug-molecule-872223.png
aziridine-molecule-nitrogen-884366.png
aminothiazole-spacefill-model-876013.png
aminoethylpiperazine-spacefill-model-876009.png
dihydroprogesterone-molecule-steroid-855558.png
apiol-phenylpropanoid-parsley-876291.png
aminopyralid-spacefill-model-876011.png
aminoethylethanolamine-spacefill-876007.png
phosphorus-sulfide-molecule-872691.png
phosphorus-sulfide-molecule-872690.png
biotin-spacefill-b-vitamin-model-910243.png
azepine-nitrogen-heterocycle-884363.png
azepane-heterocycle-nitrogen-884361.png
azelaic-acid-dicarboxylic-spacefill-884359.png
amps-sulfonic-acid-acrylamido-876070.png
amoscanate-experimental-anthelmintic-876033.png
amitriptylinoxide-tricyclic-876022.png
dimethylbutane-neohexane-alkane-836120.png
crown-5-3d-spacefill-ether-model-835896.png
crown-4-3d-spacefill-ether-model-835872.png
retinal-cis-3d-spacefill-model-835851.png
pyran-heterocycle-spacefill-ball-835809.png
tetramethyluronium-trifluoromethyl-835794.png
annulene-cyclotetradecaheptaene-835643.png
aminomethylcyclopropane-cis-model-835640.png
acarbose-diabetic-drug-867864.png
acarbose-diabetic-drug-867863.png
amlodipine-calcium-channel-blocker-876024.png
altretamine-anti-cancer-drug-875800.png
altretamine-anti-cancer-drug-875799.png
aranidipine-calcium-channel-blocker-883791.png
tetrahydrocannabinol-hydroxy-thc-3d-835853.png
octene-spacefill-alkene-ball-model-835813.png
dioxin-heterocycle-spacefill-ball-835807.png
dimethoxyphenethylamine-molecule-855585.png
aranidipine-calcium-channel-blocker-883792.png
aminoindane-psychoactive-drug-836133.png
chlorofluorocarbon-fluoroethane-835796.png
Hydrogen-sulfide-3D-vdw.svg
Sulfur-dioxide-resonance-2D.svg
PopulationCode.svg
Circle graph and circle model.svg
Agomelatine structural view.svg
Khyber Pakhtukhawa Assembly 2013 Seating Chart.svg
(R)-Norfenefrine molecule spacefill.png
(S)-Norfenefrine molecule spacefill.png
(R)-Norfenefrine molecule ball.png
(S)-Norfenefrine molecule ball.png
(1R,2R)-Pseudoephedrine molecule spacefill.png
(1S,2S)-Pseudoephedrine molecule spacefill.png
(1S,2R)-Ephedrine molecule from xtal spacefill.png
(1R,2S)-Ephedrine molecule from xtal spacefill.png
(R)-Phenylephrine molecule spacefill.png
(S)-Phenylephrine molecule spacefill.png
(1R,2R)-Pseudoephedrine molecule ball.png
(1S,2S)-Pseudoephedrine molecule ball.png
(1S,2R)-Ephedrine molecule from xtal ball.png
(1R,2S)-Ephedrine molecule from xtal ball.png
(R)-Phenylethanolamine molecule spacefill.png
(S)-Phenylethanolamine molecule spacefill.png
(R)-Octopamine molecule spacefill.png
(S)-Octopamine molecule spacefill.png
(S)-Linalool molecule spacefill.png
S-Thalidomide-3D-spacefill.png
(R)-Linalool molecule spacefill.png
(R)-sec-Butylamine molecule spacefill.png
(S)-sec-Butylamine molecule spacefill.png
(R)-Mandelic acid molecule spacefill.png
(S)-Mandelic acid molecule spacefill.png
(R)-Phenylephrine molecule ball.png
(S)-Phenylephrine molecule ball.png
Meso-Lactide molecule spacefill.png
L-Lactaldehyde molecule spacefill.png
D-Lactaldehyde molecule spacefill.png
Alpha-(-)-Hexachlorocyclohexane molecule spacefill.png
Alpha-(+)-Hexachlorocyclohexane molecule spacefill.png
L-Mimosine zwitterion spacefill.png
(R,R)-Lactide molecule spacefill.png
(S,S)-Lactide molecule spacefill.png
L-Mimosine molecule spacefill.png
L-Methionine molecule spacefill.png
L-Methionine zwitterion spacefill.png
D-Lactic acid molecule spacefill.png
L-Lactic acid molecule spacefill.png
(Z)-Pulvinone-3D-spacefill.png
Fosaprepitant-3D-spacefill.png
(E)-Pulvinone-3D-spacefill.png
Ethocybin 3D spacefill.png
3,3'-Diiodothyronine 3D spacefill.png
Perifosine-zwitterion-3D-spacefill.png
Fosaprepitant-anion-3D-spacefill.png
3'-Monoiodothyronine 3D spacefill.png
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