Naruto can remake a long lost cell.
Tsunade can regen and recreate her dmg cell or "rebirth" her cell.
An unborn baby is still part of the mother before it seperated, still i think if Naruto can remake Kakashi long lost eye, he can just recreate a baby at any stage 0-9month...
If Tsunade is pregnant, she can give birth then re create/rebirth another baby..
Tsunade can regen and recreate her dmg cell or "rebirth" her cell.
An unborn baby is still part of the mother before it seperated, still i think if Naruto can remake Kakashi long lost eye, he can just recreate a baby at any stage 0-9month...
If Tsunade is pregnant, she can give birth then re create/rebirth another baby..