A Tobacco-Derived Thymosin β4 Concatemer Promotes Cell Proliferation and Wound Healing in Mice

Figure 4

Assay of tobacco-dervied 4×Tβ4 protein promoting mice splenic lymphocyte proliferation using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) method. Column 4×Tβ4 (tobacco) indicates 4×Tβ4 extracted from transgenic tobacco leaves; column Tβ4 (GL Biochem) indicates commercially purchased Tβ4; indicates that tobacco-derived 4×Tβ4 was significantly more effective than commercial Tβ4 at promoting cell proliferation (, ).