In other ten rabbits, the primary dose of ETX was repeatedly administered at a 3 day resting interval, fox six times to determine if accumulation of ETX and rabbit tolerance to ETX develops.

• 另用10 只家兔每隔3d 共连续6 次重复首剂量的ETX,以家兔平均升温值及级ETX 次序,观察家兔对ETX 是否有积蓄耐受作用。