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World J Clin Pediatr. Sep 9, 2026; 15(3): 121760
Published online Sep 9, 2026. doi: 10.5409/wjcp.121760
Figure 1
Figure 1 Embryogenesis of male external genitalia and pathogenesis of aphallia, illustrating normal genital tubercle development, androgen-driven differentiation and mechanisms leading to genital tubercle agenesis and ectopic urethral positioning. The figure layout was assisted by an artificial intelligence-based tool (NotebookLM); however, all scientific content, conceptualization, labeling and annotations were independently developed by the authors. SRY: Sex determining region Y; DHT: Dihydrotestosterone; SHH: Sonic hedgehog; FGF: Fibroblast growth factors.


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