Table I.

The effect of the senna extract on the ^99mTc distribution for each blood compartment.

Compartments	Control group (%ATI)	Treated group (%ATI)
BC	93.18±1.94	92.17±0.90
P	6.82±1.94	7.83±0.90
IF-P	72.98±2.73	68.84±4.14
SF-P	27.02±2.73	31.16±4.14
IF-BC	78.44±2.09	76.08±5.94
SF-BC	21.56±2.09	23.92±5.94

Samples of blood from Wistar rats (treated and control) were incubated with stannous chloride and ^99mTc was added. The samples were centrifuged, and plasma (P) and blood cells (BC) were separated. Other aliquots of P and BC were precipitated with trichloroacetic acid, and soluble (SF) and insoluble (IF) fractions were also separated and counted. The radioactivity was counted and the percentage of radioactivity (ATI%) was calculated.