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. 2026 Sep 22;17:1940119. doi: 10.3389/fimmu.2026.1940119

Table 3.

Peripheral blood lymphocyte subpopulation immunophenotyping and age-matched EuroFlow reference ranges.

Estimated cellularity in relation to the total number of nucleated cells examined
Population Events/ul Range/ul
Linphocytes 2150 2500-9920
B- cells 88 485-3950
Pre-Germinal Centre 70 455-3585
Post-Germinal right (post-GC CBM) 17 8-405
BCM ‘‘Unswitched¨/Plasmatic cells (CP) 13 3-340
BCM ¨Switched¨/CP 4 4-100
T-cells 1924 1715-7500
CD4+CD8- 1013 1275-5460
Naive CD4+ 652 1100-5170
CD4+Central/Transitional Memory 279 150-835
CD4+ Effector Memory 80 0.2-40
Effector TD CD4+ 2 0-7
CD8+ CD4- 714 370-2000
Naive CD8+ 373 340-1805
CD8+ central/transitional memory 84 25-475
Effector memory CD8+ 87 0-135
CD8 + TD Effectors CD27+d 26 0-365
CD8+ TD Effectors CD27- 145 0-220
CD4-CD8-/dim TCRgd+ 38 45-430
CD4-CD8-/dim TCRgd- 157 10-70
NK cells 138 180-1330
Eosinophils 82 50-695
Neutrophils 417 775-8800
Monocytes 254 390-2950
Monocytes CD16+ 70 5-75
Plasmocytoid dendritic cells 3 9-60
Basophils 18 5-75

Patient values are expressed as absolute counts (events/µL). Reference ranges correspond to the 5th–95th percentiles of the healthy reference cohort aged 1–11 months old (n= 23), established using the standardized EuroFlow Primary Immunodeficiency Orientation Tube protocol.21.