part of develops from developmentally induced by mesonephric tubule ureteric bud VHOG:0000541 EHDAA:3091 ureteric diverticulum gemma ureterica diverticulum metanephricum BTO:0001646 An epithelial swelling on the Wolffian duct that elongates to invade the adjacent metanephric mesenchyme[MP]. metanephric diverticulum diverticulum SCTID:361528000 EMAPA:17209 Wikipedia:Ureteric_bud ureteric ampulla EHDAA2:0002140 EHDAA:5917 NCIT:C34207 metanephric bud mesonephric duct metanephric mesenchyme epithelial sac meso-epithelium epithelial layer of duct