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Study Information
Study Attribute Value
CEBS Accession Number: 002-01814-0003-0000-9
Chemical Name: C.I. Vat brown 3
CASRN: 131-92-0
NTP Study Type: Genetic Toxicology - Bacterial Mutagenicity
NTP Study ID: 843985
Vehicle Control: Water
Study Result: Negative

Table Instructions and Notes:
You are currently viewing the results for this Salmonella study's detailed data.
Individual strain data is presented as mean ± standard error.
Abbreviations are noted at bottom of page.
Trial summary calls are shown in parentheses.
Standard NTP Protocol

Strain: TA100
Dose No Activation
(Negative)
No Activation
(Negative)
10% RLI
(Negative)
10% RLI
(Negative)
10% HLI
(Negative)
10% HLI
(Negative)
Protocol Preincubation Preincubation Preincubation Preincubation Preincubation Preincubation
ug/Plate Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM
 0         
111 6.8 103 7.5 127 9.8 110 9.5 104 9.5 115 7.9
100         
116 9.1 87 10.8 98 10.2 71 28.2 103 8.5 87 6.7
333         
94 9.9 84 2.7 110 5.2 84 25.8 115 11.3 94 1.2
1000         
98 14.8 95 3.8 136 3.5 88 26 134 5.2 108 3.2
3333         
109 4.1 79 2.6 111 7.7 73 28.5 125 6.6 101 11.6
10000         
111 13 70 6.7 88 3.7 54 19.3 117 12.7 79 3.3
Positive Control 287 7.3 288 2 1456 35.4 491 19.1 1526 39.4 1071 51

Strain: TA1535
Dose No Activation
(Negative)
No Activation
(Negative)
10% RLI
(Negative)
10% RLI
(Negative)
10% HLI
(Negative)
10% HLI
(Negative)
Protocol Preincubation Preincubation Preincubation Preincubation Preincubation Preincubation
ug/Plate Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM
 0         
31 1 19 2.9 10 2.7 6 0 6 .3 7 .7
100         
19 3 14 .6 8 2.3 8 .3 8 3.8 7 2.3
333         
22 4.4 16 .9 8 .6 6 .3 8 .3 11 1.5
1000         
28 1.2 17 1 7 .7 7 .3 9 1.5 11 2.8
3333         
32 2 28 2.6 8 2.7 8 1.3 8 .6 10 2
10000         
26 3.2 16 2.2 10 1.9 10 1.9 10 .3 4 2
Positive Control 327 8.2 282 15 444 25.2 136 10.9 512 24.7 331 20.1

Strain: TA1537
Dose No Activation
(Negative)
No Activation
(Negative)
10% RLI
(Negative)
10% RLI
(Negative)
10% HLI
(Negative)
10% HLI
(Negative)
Protocol Preincubation Preincubation Preincubation Preincubation Preincubation Preincubation
ug/Plate Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM
 0         
5 .3 4 1.3 7 .9 8 .9 6 .6 5 0
100         
6 1.3 7 1.2 6 2.3 8 2.2 7 .6 8 2.6
333         
6 .6 5 .6 7 1.5 10 1.5 8 1.5 7 .7
1000         
7 .6 4 0 9 1.3 12 1.3 7 1.2 7 2.2
3333         
7 .3 6 1.2 9 0 10 1.2 8 1.2 8 .3
10000         
6 0 7 1.2 7 1.5 5 1.5 6 .9 5 1.8
Positive Control 161 18.4 178 49.6 423 21.2 141 12.3 473 6.7 224 47.5

Strain: TA98
Dose No Activation
(Negative)
No Activation
(Negative)
10% RLI
(Negative)
10% RLI
(Negative)
10% HLI
(Negative)
10% HLI
(Negative)
Protocol Preincubation Preincubation Preincubation Preincubation Preincubation Preincubation
ug/Plate Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM Mean ±SEM
 0         
14 1.9 15 .6 27 3.5 20 1.9 25 2.9 29 4.6
100         
15 1.5 15 1.2 22 5.7 30 7.5 26 3.6 30 3.8
333         
19 3.5 17 .7 26 5.5 33 3.5 30 2.5 29 2.3
1000         
16 .3 20 2.3 34 3.6 34 2.7 32 3.2 36 4.4
3333         
19 .7 16 1.8 24 2 21 1.8 29 1.8 26 3.5
10000         
13 1 15 1.2 21 5.5 18 3.9 26 5.4 14 3
Positive Control 340 20 300 21.9 1195 37.4 465 14.7 1364 70.3 926 57.1

Abbreviations:
RLI = induced male Sprague Dawley rat liver S9
HLI = induced male Syrian hamster liver S9
s = Slight Toxicity; p = Precipitate; x = Slight Toxicity and Precipitate; t = Toxic;