[Effect of vitamin B12 on body resistance in calves].
D000818:Animals; D002417:Cattle / Q000276:immunology*; D007113:Immunity, Innate / Q000187:drug effects*; D013997:Time Factors; D014805:Vitamin B 12 / Q000276:immunology*
D014805:Vitamin B 12
Vliianie vitamina B12 na rezistentnost' organizma teliat.