teaching and education
The previously described macromolecular crystallography tutorial [Faust, Panjikar, Mueller, Parthasarathy, Schmidt, Lamzin & Weiss (2008). J. Appl. Cryst. 41, 1161-1172] has been significantly revised and expanded with two more experiments.
editorial
The problem of undercounting of citations that are published only in supplementary material is studied for the journals Nature, Science, Cell and the Proceedings of the National Academy of Sciences (USA).