Gram-negative bacteria protect themselves with an outermost layer containing lipopolysaccharide (LPS). O-antigen-specific bacteriophages use tailspike proteins (TSP) to recognize and cleave the O-polysaccharide part of LPS. However. O-antigen composition and structure can be highly variable depending on the environmental conditions. https://www.jmannino.com/amazing-price-Sensationnel-Cloud-9-Glueless-What-Lace-13x6-HD-Swiss-Lace-Front-Wig-BRIELLE-big-savings/