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Study Information
Study Attribute Value
CEBS Accession Number: 002-02478-0002-0000-5
Chemical Name: Mirex
CASRN: 2385-85-5
NTP Study Type: Genetic Toxicology - Mammalian Cell Cytogenetics
NTP Study ID: 473171_CA
Study Result: Negative

Study Result: Negative
Activation Trial Trial Call
No Activation  1  Negative 
Induced Rat Liver S9  1_S9  Negative 

Trial #:1   Activation: No Activation    Date: 04/20/1983    Harvest Time: 14 hour(s)   Trial Call: Negative   
  Dose
µg/mL		 Total
Cells Examined		 Total Aberrations Complex Aberrations Simple Aberrations Other Abs
No. of
Abs		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs
Vehicle Control: Dimethyl Sulfoxide 
0         
 100 3 0.030 3.0 1 0.010 1.0 2 0.020 2.0 0 0.000 0.0
Test Chemical: Mirex 
26         
 100 4 0.040 4.0 0 0.000 0.0 4 0.040 4.0 0 0.000 0.0 
83.2       
 100 6 0.060 6.0 2 0.020 2.0 4 0.040 4.0 0 0.000 0.0 
260         
 100 5 0.050 5.0 0 0.000 0.0 5 0.050 5.0 0 0.000 0.0
Positive Control: Mitomycin-C 
 0.15      
 50 20 0.400 32.0 7 0.140 14.0 13 0.260 20.0 0 0.000 0.0
Trend: 0.865 -0.252 1.059  
Probability: 0.193 0.600 0.145  


Trial #:1_S9   Activation: Induced Rat Liver S9    Date: 04/20/1983    Harvest Time: 14 hour(s)   Trial Call: Negative   
  Dose
µg/mL		 Total
Cells Examined		 Total Aberrations Complex Aberrations Simple Aberrations Other Abs
No. of
Abs		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs		 No. of
Abs.		 Abs
Per
Cell		 % Cells
With
Abs
Vehicle Control: Dimethyl Sulfoxide 
0         
 100 5 0.050 5.0 1 0.010 1.0 4 0.040 4.0 0 0.000 0.0
Test Chemical: Mirex 
26         
 100 8 0.080 8.0 3 0.030 3.0 5 0.050 5.0 0 0.000 0.0 
83.2       
 100 8 0.080 7.0 1 0.010 1.0 7 0.070 6.0 0 0.000 0.0 
260         
 100 8 0.080 7.0 0 0.000 0.0 8 0.080 7.0 0 0.000 0.0
Positive Control: Cyclophosphamide 
15         
 50 16 0.320 30.0 4 0.080 6.0 12 0.240 24.0 0 0.000 0.0
Trend: 0.446 -1.006 0.981  
Probability: 0.328 0.843 0.163