Molecular genetic analyses of the immunological (TLR4, TLR7, TNF-α, IL10, NCF4, and LITAF), antioxidant (ATOX1, GST, and OXSR1), and erythritol-related (TKT, RPIA, and AMPD1) genes comparing healthy and endometritis cows found differences in nucleotide sequence and transcript levels. Here, NCF4 is linked to endometritis.