Match the statements with either lipid A or O antigen Anchor

Match the statements with either lipid A or O antigen.

Anchors LPS in the outer membrane.

Alerts immune system to Gram-negative bacteria

Composed of polysaccharides.

Used to identify bacterial strains.

O antigen

Lipid A

Solution

Anchors LPS in the outer membrane - Lipid A

Alerts immune system to Gram negative bacteria - Lipid A

Composed of polysaccharide - O antigen

Used to identify bacterial strains - Lipid A

The adverse factor in gram-negative sepsis is the presence of an
endotoxin called lipopolysaccharide (LPS) in the outer membrane of the gram-negative cell wall. Lipopolysaccharide is a potent immune stimulator. The component that accounts for most of the adverse effects is lipid. A embedded in the external layer of the membrane. This lipid is active only after it is liberated by bacteria that are growing or lysed by host defenses and other factors. In general, lipid Atriggers the secretion of interleukins, tumor necrosis factor, and other cytokines by macrophages.