FGFR2 and mastitis: Cows were genotyped with medium (50 k) or low (7 to 10 k) density chips and imputed to 50 k, resulting in 1013 genes associated with udder morphology, mastitis, and production phenotypes (e.g., ESR1, FGF2, FGFR2, FGFR2, GLI2, IQGAP3, PGR, PRLR, RREB1, BTRC, and TGFBR2, among others) [48].