NAA10 and hydronephrosis: Hydronephrosis (red arrow, Naa10+/Y 0/23, Naa10-/Y 14/29, Naa10+/+ 0/5, Naa10-/- 7/19) and abnormal genitalia (black arrow) of male (middle, Naa10+/Y 0/23, Naa10-/Y 16/29) and female (bottom, hydrometrocolpos, Naa10+/+ 0/5, Naa10-/- 7/19) are shown.