... exocytosis of granular hemocytes of the horseshoe crab [17]. Mastoparan was first identi-fied as a stimulator that led to the release of histaminefrom rat mast cells [33]. Mastoparan forms an amphi-philic ... horse-shoe crab antimicrobial peptides. J Biol Chem 276,27166–27170.26 Kawabata S, Nagayama R, Hirata M, Shigenaga T,Agarwala KL, Saito T, Cho J, Nakajima H, Takagi T& Iwanaga S (1996) Tachycitin, ... NaOH, pH 7.0, containing 0.15 mNaCl, tachyplesin or mastoparan was injected at a flow rate of 20 lLÆmin)1. The change in the mass concentration on the sensor chip was monitored as a resonance...