CD19 and peeling skin syndrome: On the contrary, the frequency of CD19+CD24highCD38− primarily memory B cells were significantly decreased in all groups of pSS patients, compared to controls (pSS: mean ± SD: 24.166 ± 13.712% versus 35.083 ± 13.887%, resp., p = 0.0046; pSS gland: mean ± SD: 23.798 ± 14.422% versus 35.083 ± 13.887%, resp., p = 0.0214; pSS EGMs: mean ± SD: 24.452 ± 13.551% versus 35.083 ± 13.887%, resp., p = 0.0165).