JoVE Journal
Developmental Biology
Developmental Biology
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Chapters
Summary
The interrenal gland in zebrafish is the teleostean counterpart of the mammalian adrenal gland. This protocol introduces how to perform the 3-β-hydroxysteroid dehydrogenase (Δ5-4 isomerase; 3β-Hsd) enzymatic activity assay, which detects differentiated steroidogenic cells in the developing zebrafish.