Figure 7From: Innate immune response in experimentally induced bovine intramammary infection with Staphylococcus simulans and S. epidermidisMilk NAGase activity in experimental S. epidermidis and S. simulans intramammary infection ( n = 8 + 8) during the two-week study period (mean ± SEM). Infection persisted in 11 out of 16 quarters. No significant differences were seen between persistent (-□-) and spontaneously eliminated infections (-■-).Back to article page