Differential response of bovine mammary epithelial cells to Staphylococcus aureus or Escherichia coli agonists of the innate immune system

Table 1 Features of S. aureus bacterial strains shortlisted for stimulation of bMEC

Strains	Hemolysis phenotype	Agr type	Capsular type	Leucotoxin titer	LukS (ng/mL)	Hla (μg/mL)
Newbould 305	hla+++ hlb+++	agr1	CP5	20	5	10
169.32	hla+++ hlb+++	agr2	CP8	120	50	5
628.24	hla- hlb-	agr1	CP5	10	0	0.6
644.15	hla- hlb-	agr1	CP5	5	0	0.6

Hla Alpha hemolysin, hlb Beta hemolysin, CP Capsular polysaccharide, LukS Small component of bi-component leucotoxins. Toxin titers and concentrations were measured in 8-h culture supernatants.

ISSN: 1297-9716