Figure 4. Fetal Antigen Stimulation during Secondary Pregnancy Overrides Cytolysis and Re-expansion of Maternal Memory CD8+ T Cells.
(A) Schematic showing the transfer of splenocytes from Act-OVA mice on the C57BL/6 (H-2b) background into each group of mice, including PP21 mice after allogeneic pregnancy sired by Act-OVA male mice on the BALB/c background, and pregnant mice mid-gestation during secondary pregnancy sired by Act-OVA or non-transgenic male mice on the BALB/c background.
(B) Number of H-2Kb:OVA257–264 CD8+ T cells and 7 days following intravenous transfer of B6 (H-2b) Act-OVA (OVA+) splenocytes for each group of mice described in (A).
(C) Absolute number (left) or normalized ratio (right) of Act-OVA (OVA+) splenocytes recovered from the spleen and pooled peripheral lymph nodes 7 days following adoptive transfer for each group of mice described in (A).
Data are from at least 3 independent experiments, each with similar results, with each point representing data from an individual mouse.
Bar, mean ± SEM. *p < 0.05, **p < 0.01, and ****p < 0.001.