A method of assay for cytidine and uridine by means of a pyrimidine-deficient strain of Neurospora.
D003562:Cytidine; D009491:Neurospora; D011743:Pyrimidines; D014529:Uridine
D011743:Pyrimidines; D003562:Cytidine; C030986:pyrimidine; D014529:Uridine