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  • Gramicidin is a heterogeneous mixture of six antibiotic compounds, Gramicidins A, B and C, Gramicidin is active against Gram-positive bacteria, except for the. — “Gramicidin - Wikipedia, the free encyclopedia”,
  • Gramicidin S or Gramicidin Soviet[1] is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. Gramicidin S is a cyclodecapeptide, constructed as two identical. — “Gramicidin S - Wikipedia, the free encyclopedia”,
  • Gramicidin B is part of the collective Gramicidin D that is an antibiotic obtained from a soil microbe- Bacillus brevis. Gramicidin B makes up 6% of Gramicidin D while Gramicidin A and C. — “Gramicidin B - Wikipedia, the free encyclopedia”,


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