Ian Hewson conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft. Marilyn Brandt performed the experiments, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft. Kayla Budd performed the experiments, prepared figures and/or tables, authored or reviewed drafts of the article, and approved the final draft.