The stainability of the tryptase positive mast cells in these species could be partly inhibited by some trypsin inhibitors such as Lina been trypsin inhibitor ( LBTI),α 1 antitrypsin and Aprotinin. 类胰蛋白酶阳性肥大细胞的酶组织化学染色可被利马豆胰蛋白酶抑制物(LBTI)、α-1-抗胰蛋白酶及Aprotinin等胰蛋白酶抑制物部分抑制。