220
T. BERGAN
T A B L E X I 1 1 (continued)
Phages in
1 1
1
1
1
1
1
1
1
~~~~
RTD
50
lo
10000 10000 10000 10000
100
1000
Phage type
10 London a
10 Paris
b
T. 672
c
T.3501
d
T.3399
e
T. 1669
f
T.3368
g
T. 3644
h
1
204
CL CL CL SCL CL CL CL SCL 4
14
3
338
2
CL
SCL CL
SCL CL
SCL SCL
SCL SCL SCL
SCL SCL SCL
-
-
-
-
-
~
~~
SCL
SCL
SCL
SCL
SCL
< SCL
SCL
SCL
_ _
CL
CL
CL
CL
-
CL
CL
-
390
100
- SCL SCL SCL SCL
SCL SCL
-
-
11 London a
SCL -
11Paris
a
CL SCL SCL e S C L SCL SCL SCL
- s
12 London a
CL SCL CL
CL
SCL
-
12Paris
a
CL SCL CL
CL
SCL
-
__
~
~.
14 London a
CL CL
-
SCL 14Paris
a
CL -
SCL 15 London a
SCL
-
-
-
2 + m 2 + m -rn
-
15Paris
b 2 + m -
-
-
-
-
-
-
For explanation of symbols see Section VI. C, 5, page 208.
2 + = + +
3 + = + + +
s, m = plaques of diminishing sizes.
< , < = degrees of lysis somewhat below those indicated by abbreviations.
computer analysis, proposed a new set consisting of 12 phages which divided 265 bacterial strains into 87 patterns. Further sets have been published
by Trifonova and Bratoeva (1975) and by Chanishvili and Chanishvili
(1975), who noted that particular phage types had a geographical distribution.
The phage typing set of Hammarstrom has had the most considerable
impact on lysotyping of S. sonnei. Originally, the set comprised 12 phages
designated I-XII. Alone or in conjunction with other phages, the Hammarstrom phages have been employed in a number of laboratories aroxnd
the world (AldovA and Such$ 1973; Giese, 1967; Grunow, 1965a-e;
Helmholz, 1966; Junghans, 1958; Kolbe, 1969; Kucharewicz, 1959;
Lhsz16 and Kerekes, 1969; Ludford, 1953 ; Mayr-Harting, 1952; Meitert
et al., 1969; van Oye et al., 1968; Rantasalo and Uotila, 1961 ; Rische et al.,