[Apoptosis of human leukemia K562 cell in vitro induced by Toxoplasma gondii].

Objective: To investigate whether the Toxoplasma gondii can inhibit proliferation of human leukemia K562 cells and/or induce apoptosis of the cells in vitro. Methods K562 cells (5x10(4)/ml) were harvested at mid-exponential phase and planted in 96 well plates with 100 microl each and in 50 ml culture bottles, 1.5 ml each.