Figure 7

(A) Numbers of bromo-deoxyuridine (BrdU)-positive cells expressed as a percentage of tyrosine hydroxylase (TH)-positive cell numbers in adrenal explant cultures after 3 days in vitro . Note that there is no significant difference between noggin-treated and control cultures. Data are presented as means ± standard error of the mean. Four explants were analysed per group and every fourth section was counted. (B) Ratio of Sox10-positive/TH-positive cells in adrenal explant cultures after 3 days in vitro. Data are presented as means ± standard error of the mean. Five explants were analyzed per group. Sox10 mRNA-positive cells were counted in every eighth section and the adjacent sections were analyzed for TH mRNA-positive cells.