Example 19
Frozen vials of 10×106 PBMCs are thawed and washed before staining with Pacific Blue labeled anti-CD3 (UCHT1), Pacific Blue labeled anti-CD14 (M5E2), FITC labeled anti-CD19 (HIB19), PE-Cy5 labeled antiCD10 (HI10a), PE labeled anti-CD27 (M-T271), and APC labeled anti-CD21 (B-ly4), all from BD Biosciences. Sorts are performed on a high speed BD FACSAria into miRVana lysis buffer (Ambion). Immature B cells, exhausted tissue-like memory, activated mature B cells, resting memory B cells, and short-lived peripheral plasmablasts are stained using previously described markers31. Total RNA from the cells is then extracted using the miRVana RNA extraction kit (Ambion) according to manufacturer's instructions and quantitated on a 2100 Bioanalyzer (Agilent).