Correction: Corrigendum: Aberrant cannabinoid signaling impairs oviductal transport of embryos

Nat. Med. 10, 1074–1080 (2004). In the online version of this article, the right axis of the graph in Figure 1a was missing its label. It should be labeled 'average litter size.' Also in the online version, the link for Figure 2 was incorrect. This has now been corrected.