Lieber found that administering antibiotics to alcoholics with liver disease caused by their condition would have less ammonia converted from urea in their stomach , which he credited to bacteria in the stomach that he had seen using his microscope .
That had been killed by the antibiotic treatment .
Lieber found that administering antibiotics to alcoholics with liver disease caused by their condition would have less ammonia converted from urea in their stomach , which he credited to bacteria in the stomach that he had seen using his microscope and that had been killed by the antibiotic treatment .