Consumption of purple sweet potato leaves modulates human immune response: T-lymphocyte functions, lytic activity of natural killer cell and antibody production

Figure 1 Proliferation responsiveness of PBMCs. ^aP < 0.05 for baseline vs washout, control 1 and 2 wk. ^cP < 0.05 for experimental 2 wk vs washout, control 1 and 2 wk. ^eP < 0.05 for experimental 1 wk vs experimental 2 wk

Figure 2 Concentration of interleukin-2 (A) and interleukin-4 (B) secreted by PBMCs. ^aP < 0.05 for experimental 2 wk vsbaseline, washout, control 1 and 2 wk.

Figure 3 Lytic activity of NK cells. ^aP < 0.05 for experimental 2 wk vs baseline, washout, control 1 and 2 wk. ^cP < 0.05 for control 2 wk vs washout, control 1 wk, experimental 1 and 2 wk.

Figure 4 Concentration of salivary IgA detected by immunoassay kit. ^aP < 0.05 for experimental 1 wk vs experimental 2 wk.