Tryptophan and nicotinamide in the nutrition of the animal microorganism, Tetrahymena.
D000818:Animals; D006801:Humans; D009525:Niacin; D009536:Niacinamide; D009752:Nutritional Status; D013768:Tetrahymena; D014364:Tryptophan
D009536:Niacinamide; D009525:Niacin; D014364:Tryptophan