1) Russian invention
Found on
https://www.crosswordclues.com/clue/gramicidin-s
Gramicidin S or Gramicidin Soviet is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. It is a derivative of gramicidin, produced by the Gram positive bacterium Bacillus brevis. Gramicidin S is a cyclodecapeptide, constructed as two identical pentapeptides joined head to tail, formally written as ...
Found on
http://en.wikipedia.org/wiki/Gramicidin_S
No exact match found.
