title: Transformation of Streptococcus lactis Protoplasts by Plasmid DNA.
abstract: Polyethylene glycol-treated protoplasts prepared from Streptococcus lactis LM3302, a lactose-negative (Lac) derivative of S. lactis ML3, were transformed to lactose-fermenting ability by a transductionally shortened plasmid (pLM2103) coding for lactose utilization.
authors.affiliation: Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota 55108.
authors.forename: J K
authors.initials: JK
authors.lastname: Kondo
authors.forename: L L
authors.initials: LL
authors.lastname: McKay