Improved Preparation of Pure Alive Eggs of Schistosoma japonicum / 中国寄生虫学与寄生虫病杂志

To prepare a large amount of pure alive Schistosoma japonicum eggs, rabbit was infected with 2000 cercariae and its liver was taken aseptically 38-45 days after infection and homogenized. The homogenate was screened through different sieves(60, 120, 200, 300, 360 meshes per inch respectively), and washed with 1.2% NaCl. The eggs and leftover were then digested with 0.25% trypsin for 2 hours, sieved over 360 meshes per inch and washed with RPMI 1640 medium. The collected eggs reached to (95.1?6.4)% of live eggs, with a high efficiency.