'
“,
_
œ
,
.
°“
,
*
'
_
Group I
Group III
Group V,
,
»
Group VIII
Respiratory Syncytial (RS)
Poliovirus
Herpes- Simplex
Vaccinia
Vacuolating Agent
,
treatment
*
Inuenza, Measles
ECHO 9
(SV 40)
Lyophized 0 °C;
RS :,
No change
BSM_
BSM
‘
V
stored at + 4 °C
-,
BSM —-— Marked decrease
—
Shght decrease
—
Moderate decrease
,'
\ for 30 days
PDA — No Change
Marked decrease
PDA
PDA_
.
:
'
Ï
Measles and;inùkænz‘a
BSM > PDA
No change
—
Shght decrease
.
'
*‘
'i
'
Î'
,
BSM —— ‘Marked decrease
_
'
‘
,
,
PDA—u +—
decrease
'
Byephized
_
' Ë '
RS
ç_ç
_
-
:
,
Poliovirus :
No change
BSM_
BSM
StoŒdâat;—6S°C
Marked decrease
,Marked decrease
——
Shght decrease
——
Moderate decrease
,fqr 1303…dàÿs;
,;_PDAr.—…—.quhange
BSM > PDA,
PDA
_
…
'ÏÎ,
Ÿ
Ü 'Inuenz‘a :
ECHO 9
—
No change
——
Shght decrease
.,
,
BSM — Marked decrease
Marked decrease
,
f —_—; ?‘Îç,;îgÏ"jÎf_ï Ï_
*
-
,_
,
PDA — No change
PDA > BSM
l',;
{;Ï“
Meäs'les :
'
.
.
,,
'
'
.,
‘
BSM,—- Marked decrease
-
.
*:,5'=L.
,
PDA — Moderate decrease
,
Lyophrzed—4O °C; , RS :
,
Ÿ
BSM
BSM
BSM
'
Moderate decrease
Ï
—5— 65 °C
BSM
Marked decrease
——
Marked decrease —— Slight decrease
——
Moderate
BSM > PDA
”
for”30 days
.
‘
PDA — No change
_
PDA
PDA
decrease
'
'
,
Ï' Ï'W
,
,
Measles'and inuenza
——Extreme decrease
——
No change
PDA
'.
'
BSM — Marked decrease
—
No change
,
_
PDA —— Moderate decrease
Suspendmg Media : BSM, basic salt medium; PDA, basic salt medium plus Parke, Davis additive; DMSO, basic salt medium plus dimethyl sulphoxide.
'
“
Changes in Titers : SLIGHT DECREASE, 0.3 < < 0.5 log; MODERATE DECREASE, 0.5 < < 1 log; MARKED DECREASE >1 log;
H
EXTREME ‘DECREASE, activity lost or too low to be measured accurately.
-