Leung, T; Corran, PH; Gee, C; Ekong, TA; Sesardic, D; (2002) Application of an in vitro endopeptidase assay for detection of residual toxin activity in tetanus toxoids. Developments in biologicals, 111. pp. 327-32. ISSN 1424-6074 https://researchonline.lshtm.ac.uk/id/eprint/8722 Full text not available from this repository.