SEARCH Articles Figures Tables Hygromycin Streptomyces hygroscopicus Streptomyces hygroscopicus NRRL Streptomyces hygroscopicus ssp Streptomyces hygroscopicus subsp Streptomyces hygroscopicus subsp limoneus Streptomyces hygroscopicus var Streptomyces hygroscopicus var Limoneus Streptomyces hygroscopicus var geldanus