Corrections Corrections

A story in the Sept. 25, 1998, issue of BioWorld Today should not have said North American Vaccine's Certiva product includes a genetically engineered component.

A story in the Sept. 18, 1998, issue of BioWorld Today should have said Introgen Therapeutics Inc. and RPR Gencell are conducting Phase II studies of ADP53 in head and neck cancer.