Figure 4: Growth inhibition of Jurkat cells by wolfberry phytochemicals, but not the purified polysacchardies. Jurkat cells were treated with wolfberry phytochemicals (A) or purified wolfberry polysaccharides (B) for 48 h as indicated. Cell proliferation was measured as described. PBS ( phosphatebuffered saline) was used as a control. *, p=0.05.