A possible role for vitamin A in the maintenance and function of the local immune system.
D000818:Animals; D006801:Humans; D007239:Infections / Q000209:etiology; D051381:Rats; D014801:Vitamin A / Q000276:immunology / Q000502:physiology*; D014802:Vitamin A Deficiency / Q000150:complications / Q000276:immunology*
D014801:Vitamin A