Fig. 5. B cell subsets and blood group A-specific B cells analyzed using the (A) CD27, CD43, CD1c and (B) CD43, CD5, CD11b classification methods. The proportion of each B cell subset within the total CD20⁺ B cell population (left panel), A-specific CD20⁺ B cells (middle panel), and blood group A-specific B cells among each B cell subset (right panel) were compared between peripheral blood and peritoneal cavity. The results are expressed as mean±SEM; N=15–30 per group.

^*P<0.05, ^**P<0.01 comparing between peripheral blood and peritoneal cavity.

Abbreviations: MZB, marginal zone B cells; MZ-B1, marginal zone-B1 cells; SEM, standard error of the mean.