Fig. 16From: Biology and distribution of hemichordates (Enteropneusta) with emphasis on Harrimaniidae and description of Protoglossus bocki sp. nov. from Scandinavia Protoglossus bocki n.sp. Cross section through the gill region. Scale bar 100 μm. Bb branchial bar, Bs branchial sac, Dnc dorsal nerve chord, Phl pharynx lumen, Vnc ventral nerve chordBack to article page