Current BiologyVolume 27, Issue 11, 5 June 2017, Pages R408-R409DispatchEvolution: Of X-Cells and X-MenAuthor links open overlay panelGeoffrey I. McFadden 1, Naja Later 2Show moreShareCitehttps://doi.org/10.1016/j.cub.2017.04.033Get rights and contentUnder an Elsevier user licenseopen archiveSummaryHumans are obsessed with labels, constantly seeking to name and categorise unknowns, or ‘X-things’. DNA sequencing has finally solved the identity of mysterious X-cells associated with tumours in marine fish, but how should we approach X in people?Previous article in issueNext article in issueRecommended articlesCited by (0)© 2017 Elsevier Ltd.