semisynthetic

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Opium poppy (Papaver somniferum) is the source for the natural and semisynthetic narcotics.

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Definitions (3)

Toggle American Heritage definitions American Heritage Dictionary (2)

  1. adjective Prepared by chemical synthesis from natural materials: a semisynthetic antibiotic.
  2. adjective Consisting of a mixture of natural and synthetic substances: a semisynthetic culture medium.

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Examples (16)

  • Minocycline, a semisynthetic tetracycline, is used for the treatment of pneumonia, rheumatoid arthritis (RA), acne, and other infectious diseases. —  PLoS ONE Alerts: New Articles
  • At present, fewer than 5\% of staphylococcal strains are susceptible to penicillin, while approximately 40\%-50\% of Staph aureus isolated have developed resistance to newer semisynthetic antibiotics such as methicillin as well. —  innovations-report
  • The determination of its beta-lactam structure and isolation of its nucleus enabled pharmaceutical companies to produce many semisynthetic cephalosporins. —  CiteULike: Everyone's library
  • Enzymes with artificial cofactors: Nondiffusible organic cofactors of enzymes can often be replaced by artifical analogues to generate semisynthetic enzymes (see scheme). —  CiteULike: Everyone's library
  • Nowadays a large variety of synthetic cofactors can be used for the reconstitution of apoenzymes and, thus, generate novel semisynthetic enzymes. —  CiteULike: Everyone's library
 

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