Fig. 7. Photographs of hearts from (A) an uninfected cod (Gadus morhua) and (B) one that was infected with an X-stage Lernaeocera branchialis. (C) Cross section though the bulbus (i) and connective tissue `capsule' (ii) that had grown around the parasite and allowed for additional blood flow. * and ** indicate the locations of the labeled portions of the parasite's cephalic anchors. (D) Chitinous exoskeleton of the cephalic anchors that were imbedded in the bulbus and capsule. The anchor in the bulbus (**) occluded a significant portion of the bulbus' lumen. Scale bar in D, 1 mm.