title: Mechanism of Antibody Synthesis: Size Differences between Mouse Kappa Chains.
abstract: In the report "Mechanism of antibody synthesis: size differences between mouse kappa chains" by W. R. Gray et al. (27 Jan., p. 465), the headings of the final two columns of Table 1 should be reversed to read "Transversions" and "Transitions."
authors.forename: W R
authors.initials: WR
authors.lastname: Gray
authors.forename: W J
authors.initials: WJ
authors.lastname: Dreyer
authors.forename: L
authors.initials: L
authors.lastname: Hood