Statistical Analysis
Statistical analysis was performed using GraphPad Prism version 7.01 software (GraphPad Software, California, USA). Comparisons between groups were made on the basis of the difference in mean percentage of cells positive for surface marker expression for phenotypic analyses, the difference in cMFI of anti-cytokine antibodies for intracellular cytokine production analyses, and the difference in mean cell number/yield for cell expansion analyses. Significance was calculated using unpaired 2-tail Student t-tests with Holm-Sidak correction for multiple tests, where a p value of <0.05 was considered significant.