Fig. 1

Analysis of Heavy and Light Chain Expression in Single B Cells Reveals Diversity of Peritoneal B Cells. (A) Identification of B cells expressing multiple heavy (H) and light (κ and λ) chains by single-cell analysis. (B) Classification of peritoneal B cells into six types based on BCR heavy and light chain pairing in mice aged 6 days, 10 weeks, and 15 months. (C) Decrease in H + κ and H + λ B cells and increase in dual κ chain-expressing B cells in elderly mice. (D) Increase in dual BCR B cells in elderly mice compared to 6-day-old and 10-week-old mice