title: An unusual type of continuous junction in Limulus.
mesh_terms: D000818:Animals; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005614:Freeze Fracturing; D006737:Horseshoe Crabs / Q000648:ultrastructure*; D007365:Intercellular Junctions / Q000648:ultrastructure*; D007811:Lanthanum
chemical_list: D007811:Lanthanum