Credit: Iestyn Pope, Nuno G.C. Ferreira, Peter Kille, Wolfgang Langbein, and Paola Borri
(a) Cartoon of a woodlouse depicting the hepatopancreas (HP) and the hind gut (HG). (b) Transmission overview of a single HP tubule, showing the helical structure. (c) Section from a HP tubule with the nuclei fluorescently labeled in blue.