الفهرس 
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Abstract
The regeneration of the amputated hindlimbs of two stages (54 and 55) of tadpole larvae of bufo regularis reuss was studied after amputating their hindlimbs at the mid skank level. The immunomodulator cyclosporine A (CsA) was selected to determine its effect on regeneration. Two kinds of experiments were designed. Thye first kind was by immersing the tadpole larvae in a solution of CsA (0.022 and 0.2 mg/ml) for five hours daily for three consecutive days, starting the treatment twelve hours after amputation.