Figure 1
From: Management of the Adult with Congenital Adrenal Hyperplasia
Steroid biosynthesis in 21-OHD. (a): Normal steroid biosynthetic pathways within each zone of the human adrenal gland. The dashed arrows indicate minor reactions. (b): Altered steroid biosynthesis in 21-OHD. The block (heavy vertical line) shunts precursors to 19-carbon steroids (heavy curved black arrow at left).