Acinetobacter baumannii

Structure and Phisiology

This bacteria is a Gram-negative, rod-shaped aerobe. A. baumannii can be responsible for infections such as pneumonia and septicemia in immunodeficient patients. The natural reservoir of this organism remains to be determined. These are among a class of bacteria that are "naturally transformable" - meaning that the incorporation of exogenous genetic material can occur due to a special physiological state incorporated by the bacteria, which may be the reason for the prevalence of antibiotic resistance in some strains of A. baumannii.

Enterobacter aerogenes

Structure and Physiology

This bacteria is Gram-negative, rod-shaped, and radially surrounded by flagellum. It can be found in dairy products, soil, and the gastrointestinal tract of animals. E. aerogenes is closely related to a wide range of other common microorganisms including Escherichia, Klebsiella, Shigella, and Serratia.