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Study Information
Study Attribute Value
CEBS Accession Number: 002-02042-0011-0000-2
Chemical Name: Diethylstilbestrol
CASRN: 56-53-1
NTP Study Type: Genetic Toxicology - Micronucleus
NTP Study ID: A06412
Strain and Species: FVB/N Mouse
Study Result: Male: Negative; Female: Negative

Blood

Start Date Sample Collection Time Sex Methodology Used Route Dosing Regimen
2000-04-19 24 hour Female Slide Scoring Gavage Gavage x 52, 26 week
  Dose
(ug/kg)
Animal
Number
Normochromatic Erythrocytes
Trend P: 0.552
No. Examined Total MN Cells Percent NCE MN Cells
per 1000
Vehicle Control Corn Oil
 0         
161 2000 1 97.5 0.5
 0         
162 2000 5 98.5 2.5
 0         
163 2000 2 97.7 1.0
 0         
164 2000 4 98.6 2.0
 0         
165 2000 1 95.9 0.5
 0         
166 2000 1 98.3 0.5
 0         
167 2000 2 97.4 1.0
 0         
168 2000 0 98.3 0.0
 0         
169 2000 0 98.3 0.0
 0         
170 2000 4 98.4 2.0
 0         
171 2000 1 97.7 0.5
 0         
172 2000 1 97.9 0.5
 0         
173 2000 4 97.5 2.0
 0         
174 2000 4 97.9 2.0
Average ± SEM   97.850 ± 0.180 1.070 ± 0.230
 
Test Chemical Diethylstilbestrol
480         
176 2000 5 98.4 2.5
480         
177 2000 1 98.5 0.5
480         
178 2000 1 99.2 0.5
480         
179 2000 4 98.2 2.0
480         
180 2000 2 97.8 1.0
480         
181 2000 2 98.0 1.0
480         
182 2000 5 98.1 2.5
480         
183 2000 1 98.1 0.5
480         
184 2000 2 98.3 1.0
480         
186 2000 2 98.0 1.0
480         
187 2000 1 97.9 0.5
480         
188 2000 1 97.6 0.5
480         
189 2000 2 97.8 1.0
480         
190 2000 0 97.7 0.0
Average ± SEM   98.110 ± 0.110 1.040 ± 0.210
Pairwise P   0.552
 

Blood

Start Date Sample Collection Time Sex Methodology Used Route Dosing Regimen
2000-04-19 24 hour Male Slide Scoring Gavage Gavage x 52, 26 week
  Dose
(ug/kg)
Animal
Number
Normochromatic Erythrocytes
Trend P: 0.500
No. Examined Total MN Cells Percent NCE MN Cells
per 1000
Vehicle Control Corn Oil
 0         
131 2000 1 98.2 0.5
 0         
132 2000 2 98.1 1.0
 0         
133 2000 5 97.1 2.5
 0         
134 2000 4 97.3 2.0
 0         
135 2000 3 97.0 1.5
 0         
136 2000 1 97.6 0.5
 0         
137 2000 5 96.9 2.5
 0         
138 2000 3 97.5 1.5
 0         
139 2000 4 97.4 2.0
 0         
140 2000 1 97.0 0.5
 0         
141 2000 0 96.1 0.0
 0         
142 2000 0 97.6 0.0
 0         
143 2000 6 98.0 3.0
 0         
144 2000 3 97.1 1.5
 0         
145 2000 5 97.4 2.5
Average ± SEM   97.350 ± 0.140 1.430 ± 0.250
 
Test Chemical Diethylstilbestrol
480         
146 2000 2 97.8 1.0
480         
147 2000 1 98.1 0.5
480         
148 2000 2 97.9 1.0
480         
149 2000 2 98.5 1.0
480         
150 2000 2 98.1 1.0
480         
151 2000 3 97.2 1.5
480         
152 2000 6 94.5 3.0
480         
153 2000 1 97.8 0.5
480         
154 2000 3 97.4 1.5
480         
155 2000 3 97.6 1.5
480         
156 2000 4 97.3 2.0
480         
157 2000 5 98.0 2.5
480         
158 2000 2 97.3 1.0
480         
159 2000 5 98.0 2.5
480         
160 2000 2 98.7 1.0
Average ± SEM   97.610 ± 0.250 1.430 ± 0.190
Pairwise P   0.500