[Mercury] goes into the cell on the blood side as methylmercury-cysteine, and it comes out into the extracellular fluid of the brain as methylmercury-glutathione." Methylmercury easily crosses the placental barrier as well, and the same two-step transport likely occurs there. In fact, any cell that takes up l-methionine from the extracellular matrix has a chance of welcoming in methylmercury-cysteine instead.
by LOUISA WRAY DALTON |
January 19, 2004