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A ball and stick model of Human Insulin. Isolated on black.
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Nourish hair of shampoo or serum. Repair damaged hair concept, 3d rendering.
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.
Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration
Open capsule or pill with molecular structure. Nanotechnology concept
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.
Biological protein and molecule, 3d rendering. 3D illustration.
Organic Carnauba Wax in Chemical Watch Glass with molecular structure place next to beaker and \nPlatycerium stemaria fern. Chemical ingredient used in cosmetic industry.
Stem of Nerium indicum T.S. under light mircoscope with white background
Strictosidine is a terpene indole alkaloid formed by the condensation of tryptamine with secologanin by the enzyme strictosidine synthase. 3d illustration
Fictitious molecule model inside red and blue pill isolated on white.
Monosodium glutamate, MSG or sodium glutamate molecules. MSG is used in cooking as a flavor enhancer with an umami taste 3d rendering
Close up of a Petri dish with yellow specimens in it
Molecule structure of novocaine
Infection disease - 3d rendered image. Abstract pathogen scene. Microscopic view. Infection, disease microbiology concept. Fungal, mold, mushroom, spore, yeast, bacteria, yeast image.  SEM (TEM) view.
Biological protein and molecule, 3d rendering. 3D illustration.
Human cell or Embryonic stem cell
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Photomicrograph of flatworm,
Virus mutant Isolate DNA molecules red in middle 3d render background
Structural model of Benzene molecule
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
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. Turquoise, blue
Molecule with biology and chemical concept, 3d rendering. Digital drawing.
A molecular model of the flavonoid Quercetin.  An antioxidant and anti-inflamatory, it is used as a nutritional suplement.  It is commonly found in many fruits and vegetables and is a significant chemical component of tea.  Isolated on white.
Aerial view of loyster farm by Ardara, County Donegal - Ireland.
3d Render Molecule Transparent Blue, Science and Medicine Concept (Clipping Path)
Free Images: "bestof:Chloryl-cation-resonance-2D.png Resonance structures of the chloryl cation ClO<sub>2</sub><sup>+</sup> Structure drawn in http //www cambridgesoft com/software/..."
Phenol resonance.svg
Chloral.svg
Colestipol skeletal.svg
Animal cell structure no text.svg
Animal cell structure en.svg
Animal cell structure de.svg
Minocycline structure.svg
Basal_Ganglia_lateral.svg
Brain_areas_implicated_in_Tourette_syndrom.svg
Basal_Ganglia_lateral-el.svg
Brain_areas_implicated_in_Tourette_syndrom-el.svg
Departure_for_the_Hunt.jpg
Chloryl-cation-resonance-2D.png
Chloryl-cation-2D-A.png
Chlorate-resonance-2D.png
Carbon-monoxide-resonance-2D.png
Sulfite-resonance-2D.png
Phenoxide-anion-resonance-2D-skeletal.png
Ph3P=CH2-ylid-phosphorane-resonance-2D.png
Cyclopentadienide-resonance-2D-skeletal.png
Ozone-resonance-2D.png
Ozone-resonance-Lewis-2D.png
Diazomethane-resonance-structures-2D.png
Bromine-dioxide-radical-resonance-2D.png
Chloryl-hexafluoroantimonate-xtal-2008-Cl-coordination-CM-3D-ellipsoids.png
Nitrilium-ions-2D.png
Thiomersal-2D-skeletal-B.png
Carboxylate-resonance-2D.png
Carboxylate-resonance-2D-skeletal.png
Nitrate-ion-resonance-hybrid-2D.png
Chloryl-cation-from-xtal-2008-CM-3D-SF.png
Cyclopentadienide-resonance-hybrid-2D-skeletal.png
Aristolochic-acids-I-and-II-2D-skeletal.png
Pentamethylcyclopentadienyl-cation-2D-skeletal-A.png
Pentamethylcyclopentenyl-cation-2D-skeletal-A.png
Chloryl-cation-from-xtal-2008-CM-3D-balls.png
Carbon-dioxide-octet-Lewis-2D.png
Bromine-dioxide-radical-resonance-hybrid-2D.png
Carbon-dioxide-octet-dot-cross-2D.png
Acetylium-ion-resonance-2D.png
Mcpba-2D-skeletal-A.png
Palladium(II)-acetate-2D.png
Chloryl-hexafluoroantimonate-xtal-2008-CM-3D-ellipsoids.png
Carbon-dioxide-octet-dot-cross-colour-coded-2D.png
Sec-butyllithium-monomer-2D-skeletal.png
Werner's-supposed-second-hexol-cation-2D-plain.png
Werner's-supposed-second-hexol-cation-2D-wedged.png
Biadamantylidene-bromonium-ion-from-xtal-1994-2D-skeletal.png
Auranofin-2D-skeletal.png
Cyclosarin-2D-skeletal.png
Borole-2D-skeletal.png
Pentaphenylborole-2D-skeletal.png
Mephedrone-2D-skeletal.png
Pentafluorobenzaldehyde-2D-skeletal.png
Acetolactate-2D-skeletal.png
Thiosulfinate-group-2D.png
LiAlCl4-2D.png
NaAlCl4-2D.png
Auranofin-projection-2D-skeletal.png
Auranofin-flat-2D-skeletal.png
Agomelatine-vs-melatonin-2D-skeletal.png
Thiosalicylic-acid-2D-skeletal-B.png
Hexane-2D-A.png
Hexane-2D-B.png
Triphenylphosphine-2D-skeletal.png
Neopentane-2D.png
Cyclosarin-R-enantiomer-2D-skeletal.png
Cyclosarin-S-enantiomer-2D-skeletal.png
Trichlorosilane-SiHCl3-2D.png
Silane-SiH4-2D.png
Trisilane-2D-A.png
Trisilane-2D-B.png
Trisilane-2D-C.png
B2F4-2D.png
Carbamates-thiocarbamates-dithiocarbamates-general-2D.png
Dimethyl-maleate-2D-skeletal.png
Thiosalicylic-acid-2D-skeletal-A.png
Acetic-anhydride-2D-skeletal.png
Neopentane-2D-skeletal.png
Cyclohexane-boat-2D-stereo-skeletal.png
Hexane-2D-skeletal.png
Hexane-2D-flat-A.png
Hexane-2D-flat-B.png
Tetramethylammonium-chloride-ion-pair-2D.png
Hexachlorocyclopentadiene-2D-skeletal.png
Hexaoxotricyclobutabenzene-2D.png
Hexaoxotricyclobutabenzene-2D-skeletal.png
1,3-dioxetanedione-2D.png
1,3,5-trioxanetrione-2D.png
Acetolactone-2D-skeletal.png
Acetolactone-2D.png
Dihydrocortisone-2D-skeletal.png
Chlorthiamide-2D-skeletal.png
Sodium-pertechnetate-2D.png
Pentaphenylborole-2D-skeletal-Ph.png
Monochlorosilane-SiH3Cl-2D.png
Dichlorosilane-SiH2Cl2-2D.png
Monoorganochlorosilane-RSiH2Cl-2D.png
Diorganochlorosilane-R2SiHCl-2D.png
Triorganochlorosilane-R3SiCl-2D.png
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