PROCÉDÉ POUR PRODUIRE UNE ÉBAUCHE D'ORGANE RÉGÉNÉRATRICE POURVUE D'UN GUIDE POUR TRANSPLANTATION, COMPOSITION CONTENANT UNE ÉBAUCHE D'ORGANE RÉGÉNÉRATRICE POURVUE D'UN GUIDE POUR TRANSPLANTATION PRODUITE PAR CELUI-CI, ET PROCÉDÉ POUR TRANSPLANTER UNE ÉBAUCHE D'ORGANE RÉGÉNÉRATRICE POURVUE D'UN GUIDE POUR TRANSPLANTATION
The purpose of the present invention is to provide a method for producing a regenerative organ primordium for transplantation, said regenerative organ primordium for transplantation ensuring continuity with a recipient after transplantation and facilitating transplantation procedures. Provided is a method for producing a regenerative organ primordium provided with a guide for transplantation, said method comprising: a step for preparing a regenerative organ primordium by tightly contacting a first cell mass, which substantially consists of mesenchymal cells, with a second cell mass, which substantially consists of epithelial cells, and culturing these cell masses within a supporting medium; and a step for inserting the guide into the regenerative organ primordium.