title: Corrections and clarifications.
abstract: In the 25 October 1991 News briefing "Treating AIDS with worts" (p. 522), it is stated that hypericin was originally synthesized at the Weizmann Institute of Science in Israel. While it was synthesized for the application discussed in the Briefing at the Weizmann Institute, its original synthesis was by H. Brockmann at Göttingen University.