Table 1.

Buffy coat donors’ characteristics—data from 101 buffy coats.

Parameter	Median (±SD)	Min—max
Lymphocytes (%)	80 (±6.1)	54–92
B lymphocytes (%)	8 (±3.1)	2–18
Lymphocytes/1 Mio PBMC	800,000 (±60,975)	544,000–921,000
B-cell count/1 Mio PBMC	60,975 (±24,791)	17,250–127,565
Naive B cells (%)	63 (±15.4)	20–91
IgM memory B cells (%)	19 (±11.1)	3–57
Isotype switched memory B cells (%)	16 (±8.9)	9–80
Isotype switched memory B cells count/1 Mio PBMC	9 094 (±7877)	2283–62,157
Anti-TT IgG (IU/ml)	1.5 (±1.5)	0.1–7.3