A novel host-parasite lipid cross-talk. Schistosomal lyso-phosphatidylserine activates toll-like A novel host-parasite lipid cross-talk. Schistosomal lyso-phosphatidylserine activates toll-like A novel host-parasite lipid cross-talk. Schistosomal lyso-phosphatidylserine activates toll-like A novel host-parasite lipid cross-talk. Schistosomal lyso-phosphatidylserine activates toll-like receptor 2 and affects immune polarization