Study of outer membrane vesicles isolated from B. abortus S19 by bulk production and characterization

Outer membrane vesicles (OMV) are closed spheroid vesicles with size ranging between 20–500 nm produced by both Gram negative and Gram positive bacteria. OMV are formed by the blebbing and pinching off segments of bacterial outer membrane. They are composed of lipopolysaccharide (LPS), glycerophospholipids, outer membrane proteins (OMPs), and periplasmic components.