*2.6. Statistical Analysis of Numerical Data*

Data were analyzed using GraphPad Prism v7 (GraphPad Software Inc., San Diego, CA, USA) using Student's unpaired t-test for concentration and size distribution, and the Whitney−Mann U-test for FACS analysis with *p*-values \* < 0.05, \*\* < 0.01, \*\*\* < 0.001, and \*\*\*\* < 0.0001. Data are presented as mean ± SEM.
