title: Patent validity.
authors.forename: M
authors.initials: M
authors.lastname: Berninger
mesh_terms: D001900:Boston; D004259:DNA-Directed DNA Polymerase; D010330:Patents as Topic; D012577:Schools, Medical; D013604:T-Phages / Q000201:enzymology; D014481:United States
chemical_list: D004259:DNA-Directed DNA Polymerase