On p. 1123 of the November 2000 issue, the commentary entitled “Good faith gone bad” by Harvey Bialy contains the sentence “Their collaboration continued, during which time Alagon discovered that the bat protein had a specificity for fibrin that was many times greater than other commercially produced tissue plasminogen activators (tPAs).” This is inaccurate in that, at the time, commercial production of tPAs was still a few years away.