title: Erratum.
abstract: In the report "Malaria parasites adopt host cell superoxide dismutase" by A. S. Fairchild et al. (19 Aug., p. 764), the caption for figure 2 on page 765 was incorrect and should read as follows: "Comparison of host and parasite SOD's (9) by (A) polyacrylamide gel electrophoresis (8) and (B) isoelecteric focusing (7). Gels were stained for SOD activity (10), and bovine erythrocyte SOD (Sigma, type 1) was used as a reference [pI = 4.95 (13)]. Lane 1, rat-derived P. berghei SOD; lane 2, rat erythrocyte SOD (pI = 5.1); lane 3, mouse-derived P. berghei SOD; lane 4, mouse erythrocyte SOD (pl = 5.7); lane 5, bovine erythrocyte SOD." The pI's of mouse and rat erythrocyte SOD's cited in the text should also be corrected to the values given above.