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. 2006 Apr 3;116(4):953–960. doi: 10.1172/JCI25091

Figure 3. Steroidogenic enzyme and StAR expression in the developing human adrenal gland.

Figure 3

Brightfield IHC at sequential developmental ages counterstained by toluidine blue with antibodies to StAR (A–E), CYP11A (F–J), CYP17 (K–O), CYP21 (P–T), and CYP11B1/CYP11B2 (U–Y). Dotted ring in A illustrates extent of the adrenal cortex in left panels (A, F, K, P, and U). In other images, the definitive zone (DZ) is oriented to the left and the fetal zone (FZ) to the right. At 14 wpc, these 2 zones were separated by an additional transitional zone (TZ). Scale bar: 300 μm.