Further studies are needed to confirm mutations in ERG11, gain-of-function mutations in transcription factors, such as multidrug resistance regulator 1 (MRR1) and transcriptional activator of CDR gene 1 (TAC1), and the overexpression of these genes to elucidate the molecular mechanisms of resistance which caused by C. krusei and C. parapsilosis isolates from mycotic mastitis presented in Yinchuan, Ningxia of China. Here, TAC1 is linked to mastitis.