however , lps from salmonella minnesota r595 ( r595 lps ) , which had a particularly high content of lipid a but lacked o-antigen polysaccharide , induced a markedly prolonged igm and igg polyclonal antibody response in mice , including athymic nude mice , but not in lps-unresponsive c3h/hej mice .
C0069180
o-antigen
C0023810
lps