Original Research: Provide a full length account of original research.
Review: Provide an in-depth and up to date critical review of a related topic.
Leading Opinion Paper: This article type may only be submitted by invitation from the Editor-in-Chief.
Communications: short reports of outstanding novel findings that also have important and general implications for specialists working in other fields. (The length limit possible but SI allowed).
Progress Reports: a critically selected overview of recent progress in important research fields. It is not intended that the articles be comprehensive, but rather insightful, selective, critical, opinionated, and even visionary.
Essays: a forum for news and opinion on topics of national and international interest. This can include, for example, news of funding and research organizations, societies, or points of controversy.