Table 3. The comparative metabolism of o-toluidine by Mytilus edulis 
from pristine (Tomales Bay) and contaminated ecosystems (San Francisco 
Bay) . 
Metabolites produced 
l in 8 hr. 
(pmole/mg dry wt.) 
Metabolites 
Tomales 
San Francisco 
N-Hydroxy-o-toluidine 
2.4(0.1) 
NB 
2-Nitrosotoluene 
22.2(14.2) 
9.5 ( 2.7 ) 
N-Methyl-o-toluidine 
29.3(16.0) 
9.3 (3.9) 
N-Formyl-o-toluidine 
27.9(13.8) 
9.7 (1.6 ) 
Sum of pathways 
81.8(44.2) 
28.5(6.6) 
ND, none detected 
Standard deviation in parentheses. 
122 
