title: Reply to the Letter to the Editor: Response to comment on: " A cascade analysis of the interaction of mercury and coproporphyrinogen oxidase (CPOX) polymorphism on the heme biosynthetic pathway and porphyrin production" by Heyer et al. [Toxicol. Lett. 1612006 159-166].
authors.affiliation: Battelle Centers for Public Health Research and Evaluation, 1100 Dexter Avenue N, Suite 400, Seattle, WA98109, USA.
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Heyer
authors.forename: Alvah C
authors.initials: AC
authors.lastname: Bittner
authors.forename: Diana
authors.initials: D
authors.lastname: Echeverria
authors.forename: James S
authors.initials: JS
authors.lastname: Woods