Fig. 1
From: Transcriptomic analysis of shell repair and biomineralization in the blue mussel, Mytilus edulis

The paired valve design for assessing shell repair in Mytilus edulis. A Location of drilled holes on the left valve, and the areas of mantle tissue sampled from both valves. B Typical extent of healing 29 days after drilling. Picture attributions (A) Picture obtained and modified under Creative Commons license (2006) from F. Lamiot, Moule, Miesmuscheln, mussel (anatomia and shell), url: https://commons.wikimedia.org/wiki/File: Moules_Miesmuscheln_mussel3.jpg; (B) from Frank Melzner with permission