| cytochrome p450ia mrna expression in feral hudson river tomcod. | we sought to determine if levels of cytochrome p450ia gene expression are environmentally induced in feral populations of hudson river tomcod, a cancer prone fish, and whether laboratory exposure of tomcod to artificially spiked and naturally contaminated hudson sediments can elicit a significant response. using northern blot analysis, we found levels of p450ia mrna in tomcod collected from two hudson river sites higher than those in tomcod from a river in maine. depuration of environmentally in ... | 2007 | 1855491 |