Recently, the J6-1 membrane associated factor, stimulating proliferation of J6-1 cells, was discovered and designed as MAF-J6-1. After fractionation via Sephadex G-100 and sequential two steps FPLC Mono Q, it was purified over 333-fold.

• 经Sephadex G-100凝胶过滤及连续两次快速蛋白液相层析(FPLC,Mono Q)将其分离。