http://www.thelandbirdsofsoutheastbrazil.com Medical Information for Better Life Tue, 23 Feb 2010 06:43:01 +0000 http://backend.userland.com/rss092 en What are antibiotics? Antibiotics are substances used to treat bacterial infections. Do not act on the virus, most common agents of the most common infections in childhood. Initially, antibiotics were extracted from fungi (penicillin) or other bacteria, but is now produced synthetically. At present there are many families of antibiotics and ... http://www.thelandbirdsofsoutheastbrazil.com/use-of-antibiotics.htm