Tissue pathologic changes of liver and spleen of Chinemys reevesii after irradiated by X-ray

The changes of pathology of liver and spleen of Chinemys reevesii after irradiated by X-ray were studied.The results showed that the liver of tortoise was composed of three parts,the connective tissue was very few in liver parenchyma and the dividing line was blurry between hepatic lobules.The apoptosis charactered by karyopyknosis and the congestion of central vein appeared in the first day after irradiation.The apoptosis was more prominence and the karyopyknosis was more obvious as well as the obstruction of blood vessel was more serious in the eighth day after irradiation.The obstruction of blood vessel was existed and pigment cells were increased in the sixteenth day after irradiation.The spleen of tortoise was divided into splenic capsule and splenic parenchyma.The splenic parenchyma was divided into white pulp and red pulp.The white pulp was composed of 1 or 2 small arteries surrounded by plentiful and denseness lymphocytes.No lymph nodule was found.The red pulp was composed of splenic cords and splenic sinus.The apoptosis of lymphocyte was found and the dividing line began blurry between white pulp and red pulp in the first day after irradiation.The central artery was obstructed and the dividing line was blurry between white pulp and red pulp in the eighth day after irradiation.The obstruction of blood vessel was more serious,the white pulp and red pulp fused in the sixteenth day after irradiation.