Intracellular serine-protease zymogen, factor C from horseshoe crab hemocytes: Its activation by synthetic lipid A analogues and acidic phospholipids - Nakamura, T; Tokunaga, F; Morita, T; Iwanaga, S; Kusumoto, S; Shiba, T; Kobayashi, T; Inoue, K (Eur J Biochem, 1988)