Full text not available. This article's full text was not recovered in the archive. The citation and links above point to the published record. Related research Immunochemical Aspects of Antigenic Variation in Trypanosomes The Third Fleming Lecture Journal of General Microbiology · 1979 Taxonomy of Clostridium tetani and Related Species Journal of General Microbiology · 1979 ← Previous article in this issueTaxonomy of Clostridium tetani and Related Species