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young woman, maybe chemist, businesswoman or teacher shows a molecular structure on a virtual whiteboard. Need more stuff like this:
Folic acid, folate molecule. It is known as vitamin B9. Molecular model. 3D rendering. Illustration
Copper(II) sulfate with molecular structure. Chemical ingredient used in medical and public health issues.
Chemical formula of Cortisol
Chemical formula of Testosterone on a blackboard
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Water (Molecular formula: H2O) is a clear, odorless, tasteless liquid that is essential for most animal and plant life. Chemical structure model: Ball and Stick. 3D illustration.
3d render Science Medical Molecule Orange (Depth Of Field)
Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration
Structural model of Benzene molecule
Handwriting Chemical formula of Citric Acid with pen. Close up.
Chemical formula of Progesterone
Structural model of Progesterone on the blackboard.
3D rendering of microscopic molecular structure
Melatonin is a hormone, released primarily by the pineal gland, that regulates the sleep–wake cycle. 3D ball-and-stick model, white background
Open capsule or pill with molecular structure. Nanotechnology concept
Microcrystalline wax with chemical formula on white laboratory table.
Molecular structure of Decane C10H22
3D illustration of industrial building
blackboard full of chemical formula
Rejected Buildings Permit concept illustration with refusing residential building project
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.
Prednisone is a glucocorticoid medication mostly used to suppress the immune system and decrease inflammation in conditions such as asthma, COPD, and rheumatologic diseases.
Photography of Empty Winners Podium with First, Second and Third Place for Award Ceremony,drawn with pen on note pad
The World Health Organization’s International Agency for Research on Cancer analyzed the potential carcinogenic effects of the sweetener.
This is a photograph drawn with a sharpie of a football play consisting of X's and O's. It is isolated on a pure white background.Click on the links below to view lightboxes.
3D illustration of building piping
Molecular model of Adenosine triphosphate,  or Adenosine-5'-triphosphate (ATP)
closeup brown cutting mat, equipment in office
Paper drawing for a double bass. The image shows a close-up from a technical drawing how to build a Paper s  double bass.
Free Images: "bestof:Dioctyl phthalate.svg Chemical structure of dioctyl phthalate own work drawn with BKchem 2007-10-3 Dschanz public domain Phthalate esters Octyl esters"
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