It is an antibiotic that was the first drug to be successful against tuberculosis but now it is used with other drugs because of its toxic effects othere uses Anti TB drug Plaque Veterinary treatment against gram negative bacteria in horses , cattle , sheep Fermentation is defined as chemical transformation of organic compound brought about through agency of microorganisms Microorganisms useful in fementation can be either prokaryotes such as bacteria , virus or eukaryotes such as fungi; yeast Test Organism-Streptomyces griseus