Table 2.

Cord blood-origin maternal microchimerism (CB-MMc) quantities according to time since CB transplantation (CBT): month-to-month fold-change estimated by the negative binomial model in the 7 patients with positive results are represented by the detection rate ratios (DRR) accompanied by their 95% confidence intervals (95%CI) and P-values. CB-MMc measurements were not independent and ‘clustered’ by CB unit (assuming each CB as an independent entity in the model). A month post-CBT was equivalent to the number of days post-CBT divided by 30.4375.

	Month-to-month DRR [95%CI] of CB-MMc levels post-CBT	P-value
Specimens
BMA	2.13 [1.78 – 2.55]	< 0.0001
WB	0.88 [0.52 – 1.50]	0.651
Neutrophils	1.41 [0.57 – 3.48]	0.454
PBMC (unsorted)	1.20 [0.76 – 1.88]	0.431
T cells	1.04 [0.63 – 1.71]	0.883
B cells	0.35 [0.07 – 1.71]	0.195
NK cells	2.9E+4 [2.3E−12 – 3.8E+20]	0.587
Monocytes	2.16 [0.62 – 7.54]	0.228
Lineages
Myeloid (Neutro; Mono)	1.73 [0.81 – 3.66]	0.155
Lymphoid (T; B; NK)	1.31 [0.55 – 3.08]	0.542
Immune Function
Adaptive (T; B)	1.03 [0.48 – 2.20]	0.943
Innate (Neutro; Mono; NK)	1.71 [1.13 – 2.60]	0.011