"Vitamin D mysteries"? Secretions and sloughings from skin and oral-gastrointestinal mucosa contain hormone.
Stumpf
W E
WE
Bidmon
H J
HJ
D000818:Animals; D005753:Gastric Mucosa / Q000378:metabolism*; D051381:Rats; D012867:Skin / Q000378:metabolism*; D014807:Vitamin D / Q000378:metabolism*
D014807:Vitamin D