1. Colistin is a polypeptide antibiotic with significant activity in vitro against some multi-resistant gram-negative pathogens.
   粘桿菌素一類對革蘭氏陰致病原菌菌具備有太強身體之外抗性的多肽抗菌藥,可治療由多沉耐藥理作用性病原菌因起的四種皮膚疾病。