title: What history tells us XIX. The notion of the episome.
authors.affiliation: Centre Cavailles, Ecole normale superieure, 29 rue d'Ulm, 75230 Paris Cedex 05, France. morange@biologie.ens.fr
authors.forename: Michel
authors.initials: M
authors.lastname: Morange
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000378:metabolism / Q000648:ultrastructure; D005075:Biological Evolution; D049672:History, 19th Century; D010957:Plasmids / Q000235:genetics / Q000378:metabolism