normal saline was injected into the subcutaneous tissue along the stomach meridian in anaesthetized rats to produce a blister. Then a mechanical pressure was given, a wave of interstitial fluid pressure(IFP) was produced. The changes of IFP on the blister in subcutaneous tissue on and beside the stomach meridian line were measured. Five different basic types of IFP waves and subtype waves , depending on the different visco-elastic feature of the tissue, were found. The difference of the wave amplitudes betw...