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Fig. 3. Gata2 expression in sympathetic ganglion primordia is blocked by
the Hand2 inhibitor noggin. Chick embryos were treated with BSA (A,B) or
noggin (C,D) at stage 14 and analysed at stage 19 for the expression of
Sox10 (A,C) and Gata2 (B,D) in sympathetic ganglion
primordia close to the dorsal aorta (da). Arrowheads point to primary
sympathetic ganglia. (E) Sox10 and Gata2 expression is
quantified by determining the area of Sox10- and
Gata2-expressing cells. The mean±s.e.m. of at least three
embryos is shown. ** significantly different from BSA controls
(P<0.01) (Student's t-test).