Blood's 70th anniversary: arsenic--from poison pill to magic bullet.

As part of a year-long celebration in honor of Blood’s 70th anniversary, we are publishing a series of editorials written by past Editors-in-Chief of the journal. The authors reflect on their experience at Blood in light of the journal’s publication history. Each of these special pieces will highlight and discuss the impact of one or more original research articles that had a significant influence on the field or that mark a pioneering scientific development in hematology that appeared in the journal during the author’s term as Editor-in-Chief.