Figure 2.
Approach used for detection of maternal MC cells among fetal cells by flow cytometry. Living cells were detected in lymph nodes from C57Bl/6 females (A), bone marrow of BALB/c males (B) and in fetal thymus and bone marrow in offspring of BALB/c-mated C57Bl/6 females (C), based on their 7AAD negativity (not shown) and gated for CD45 positivity (left panel). Within the respective CD45+ gates (solid squares), the frequency of cells expressing H-2Db or H-2Dd was detected (right panel). Maternal MC was identified based on the frequency of CD45.2+H-2Db cells among CD45.2+1+H-2Db/d fetal cells (stippled squares in C, right panel).