The biological activity of endotoxin is associated with the lipopolysaccharide (LPS). Toxicity is associated with the lipid component (Lipid A) and immunogenicity is associated with the polysaccharide components. The cell wall antigens (O antigens) of Gram-negative bacteria are components of LPS.
New summer destination added to Harrisburg International Airport flights. Allegiant Air will begin offering nonstop flights from the Harrisburg International Airport to Myrtle Beach, S.C. for as low as $45 beginning this summer. HIA Executive Director Timothy Edwards announced Tuesday that summer seasonal routes to Myrtle Beach will operate twice weekly beginning May 19. The discount airline will now offer flights to four locations â including Punta Gorda, Orlando and Tampa.
10 photos: Gallery: Ultralonghaul flights. Ultralonghaul flights: Marathon airline travel â The longest nonstop flights in the world at nearly 19 hours, Singapore Airlines' Flights 21 and 22, have linked Singapore and Newark, New Jersey, since 2004. The route -- which is flown by Airbus A340s -- is scheduled to be canceled in November.