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Effects of testosterone on urogenital tract morphology and androgen receptor expression in immature Eastern Fence lizards (Sceloporus undulatus)

Abstract
In non-avian reptiles, the onset of sexual dimorphism of the major structures of the urogenital tract varies temporally relative to gonadal differentiation, more so than in other amniote lineages. In the current study, we used tonic-release implants to investigate the effects of exogenous testosterone (T) on postnatal development of the urogenital tract in juvenile Eastern Fence Lizards (Sceloporus undulatus) to better understand the mechanisms underlying the ontogeny of sexual differentiation in reptiles. 

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Matthew R Milnes, Christopher D Robinson, Alexis P Foley, Charleigh Stepp, Matthew D Hale, Henry B John-Alder, Robert M Cox 
https://pubmed.ncbi.nlm.nih.gov/38036014/