About the Authors
Department of Biology, University of York, York, United Kingdom
Department of Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands
Department of Parasitology, Leiden University Medical Centre, Leiden, The Netherlands
The authors have declared that no competing interests exist.
Conceived and designed the experiments: RAW AWT PSC. Performed the experiments: RAW JAML RAV SLH WCB GPD PSC. Analyzed the data: RAW GJvD PSC. Contributed reagents/materials/analysis tools: GJvD SLH WCB GPD AWT. Wrote the paper: RAW PSC.