Mating success rates in TPH2+/+, TPH2+/- and TPH2-/- mice.

Mating pairs of the indicated genotypes were caged together for 21 days after which the male was removed. From this time forward, the female was housed alone until pups were born or until the passage of an additional 21 days. Matings were scored as successful if pups were born and matings that extended beyond the 21 day post-mating period without births were deemed unsuccessful. Statistical comparisons among rows and the level of significance is indicated below: row 1 different from rows 4 (p Mating success rates in TPH2+/+, TPH2+/- and TPH2-/- mice.