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Fig. 2. Notch receptor ligation generates T cells from P-Sp/AGM, but not from YS
of early embryos. (A) YS and P-Sp from E9.0-9.5 embryos (somites
15-20) were dissected and cultured on OP9 cells for 14 days without exogenous
cytokines. The cultures were then stained for lymphocyte markers including
TCRß and TCR
. (B) E9.0-9.5 P-Sp were cultured on
OP9-DL1 with or without additional cytokines for 14 days in parallel, the
cultures were then stained for TCR
and TCRß from
comparison. (C) E9.0-9.5 P-Sp were cultured on OP9-DL1 with (black
bars) or without additional cytokines (white bars) for 14 days in parallel.
The total cell number per tissue (left) and T cells produced (right) are
shown.