Bacterial cell parts: Cell envelope (Gram-negative cell walls) t4.1
- One or few layers of peptidoglycan (thin) which makes them more susceptible to mechanical breakage
- Extra outer membrane
- No teichoic acids
- Lipid A: (in outer membrane) Released when gram-negative bacteria die (endotoxin). Causes adverse symptoms such as fever, vommiting, diahreah, dilation of bvs, shock, blood clotting. Patient might get sicker before getting better.
- Polysaccharide O: (in outer membrane) Functions as an antigen (Ag)
- Resistant to penicillin, sulfonamide & lysozyme (natural antibiotic found in tears, sweat, saliva, mucus)