Objective To observe the differences in growth rates of Schistosoma japonicum(Sj)at different points in development.Methods Worms were recovered from Kunming mice infected with Sj cercariae on days 0,8,12,16,20,24,and 28 post-infection,respectively.Pathological Image Processing System Motic BA400 and 3.2 software were utilized to observe morphology and measure worm area,perimeter,length,and width.Results Worms at different points in development grew at distinctive rates.Worms on days 8 to 12 had the fastest development,followed by worms on da...