TABLE 2.
Reactions between extract antigens (Lancefield method) of three strains studied and the antisera raised against them
| Strain against which antiserum was raised | Reaction of antiserum to extract of straina:
|
|||||||
|---|---|---|---|---|---|---|---|---|
| 0884
|
22634
|
7214
|
B848 (Gr. B)c
|
|||||
| 0.1 N | 0.2 N | 0.1 N | 0.2 N | 0.1 N | 0.2 N | 0.1 N | 0.2 N | |
| 0884 | ++ | ++ | ++ | ++ | + | ++ | − | − |
| 0884, 22634b | − | − | − | − | − | − | − | − |
| 0884, 7214b | − | − | − | − | − | − | − | − |
| 22634 | ++ | ++ | ++ | ++ | + | + | − | − |
| 22634, 0884b | − | − | − | − | − | − | − | − |
| 22634, 7214b | − | − | − | − | − | − | − | − |
| 7214 | +++ | +++ | +++ | +++ | ++ | ++ | − | − |
| 7214, 0884b | − | − | − | − | − | − | − | − |
| 7214, 22634b | − | − | − | − | − | − | − | − |
| Gr. B (B848) | +++ | +++ | +++ | ++ | ++ | ++ | +++ | ++ |
a
−, negative reaction; +, weak reaction; ++, moderate reaction; +++, strong reaction.
b
The antiserum was absorbed with culture of the second-mentioned strain.
c
Nontypeable group B strain.