Fig. 1.

Steroid sulfatase activity in Trachemysscripta embryos. (A) Mean (±s.e.m.) steroid sulfatase (STS) activity for each tissue averaged across development. (B–F) STS activity within the (B) embryo (n=17), (C) membranes (n=61), (D) adrenal–kidney–gonad complexes (AKGs; n=39), (E) brain (n=39) and (F) liver (n=39) across development. STS activity was calculated as estrone produced (cpm) µg⁻¹ protein h⁻¹. Groups not sharing a letter are significantly different (P<0.05) as measured by ANOVA. Non-transformed values are plotted.