The embryonic development of Schistosoma mansoni eggs: proposal for a new staging system Arnon D. JurbergTiana GonçalvesHenrique L. Lenzi Original Article 05 May 2009 Pages: 219 - 234
Evolutionary modification of specification for the endomesoderm in the direct developing echinoid Peronella japonica: loss of the endomesoderm-inducing signal originating from micromeres Minoru IijimaYasuhiro IshizukaTakuya Minokawa Original Article 12 May 2009 Pages: 235 - 247
The involvement of engrailed and wingless during segmentation in the onychophoran Euperipatoides kanangrensis (Peripatopsidae: Onychophora) (Reid 1996) Bo Joakim ErikssonNoel N. TaitMichael Akam Original Article 12 May 2009 Pages: 249 - 264
Cloning and characterization of zebrafish protocadherin–17 Sayantanee BiswasJames D. Jontes Short Communication 16 May 2009 Pages: 265 - 271
Use of freeze-cracking in ontogenetic research in Macrostomum lignano (Macrostomida, Rhabditophora) Maxime WillemsMieke BooneGaëtan Borgonie Technical Note 02 May 2009 Pages: 273 - 279