11. Bottromycin was first isolated from " Streptomyces  bottropensis " in 1957. 12. Novel antiinfectives being developed include Guadinomine ( " Streptomyces  " sp. 13. The strain SD5 of " Streptomyces  megasporus " produces fibrinolytic enzymes. 14. The microorganism discovered in the soil was later named Streptomyces  norsei in their honor. 15. He is also the author of Streptomyces  in Nature and Medicine : The Antibiotic Makers 16. The now uncommonly used streptomycin takes its name directly from " Streptomyces  ". 17. It was discovered in 1952 as a product of " Streptomyces  ambofaciens ". 18. It is found naturally as a fermentation product of " Streptomyces  fradiae ". 19. It is produced in a marine " Streptomyces  " species, strain WMMB272. 20. Structural analogues cyclothiazomycin B1 and B2 were isolated from " Streptomyces  " sp.