fresh water, salt water, or soil). It may be normally present in fish and frogs; it may be isolated from chronic infectious states, as in the sputum of cystic fibrosis patients. In 1959,  American bacteriologist Elizabeth O.
Fresh water, salt water, or soil. This substance can be found naturally in fish and frogs; it may also be isolated from chronic infections, such as in the sputum of cystic fibrosis patients. In 1959, American bacteriologist Elizabeth O.