“…I am grateful to Dr Burns 1 for showing interest in my paper "Amniotic fluid may act as a transporting pathway for signaling molecules and stem cells during the embryonic development of amniotes" published in the Journal of the Chinese Medical Association. 2 Actually, the hypothesis that amniotic fluid (AF) may act as a transporting pathway for signaling molecules during embryonic development came to my mind about 20 years ago.…”