The author and journal apologise for an error in the paper byRoger Guillemin that appeared in the January 2005 issue of Journalof Endocrinology184 11-28, entitled 'Hypothalamic hormonesa.k.a. hypothalamic releasing factors'. Geoffrey W Harris'slast academic position was as Lees Professor of Anatomy at OxfordUniversity, not as head of the Department of Physiology in Cambridgeas was erroneously written on page 11 of the review.