TABLE 1.
Strains used in this study
| EAggEC or CDEC strain | Serotype | AA probea | Hly presence or absencec | PCR band (hlyA)d | LDH releasee | IL-1β releasee |
|---|---|---|---|---|---|---|
| O42 | O44:H18 | + | − | − | − | − |
| 17-2 | O3:H2 | + | + | + | + | + |
| JM221 | O92:H33 | + | − | − | − | − |
| 69H77-1 | − | − | − | − | − | |
| 52H72.2 | − | NDb | ND | − | ND | |
| DS244R3 | + | − | ND | − | ND | |
| WC216-1-1 | R:H27 | + | − | ND | − | ND |
| WC201-1-4 | O81:NM | − | + | − | − | ND |
| H32-1 | − | − | ND | − | − | |
| Thai501-1-1 | Rough | − | + | − | − | ND |
| DS65-R3 | − | − | ND | − | ND | |
| 81H194-2 | + | − | ND | − | ND | |
| 54H-191-1 | + | − | ND | − | ND | |
| 697 (WRAIR) | ND | + | + | + | + | |
| 55-3 Hly+ (CDEC) | O6:H− | ND | + (two copies) | + | + | + |
| 55-3 Hly− (CDEC) | ND | − | − | − | − |
a
AA probe refers to a specific DNA probe present in some but not all EAggEC strains (see references 3 and 7).
b
ND, not determined.
c
Hly determined on blood agar plates.
d
hlyA determined by PCR amplification with hlyA primers.
e
LDH activity and IL-1β release were determined with both HMDM and J774 cells.