Fig. 2 in Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population.

Fig. 2. Synoptic illustration of mantle extensions of the genus Durgella. A, B: four mantle extensions with left dorsal lobe undivided. C, D: five mantle extensions with left dorsal lobe divided into anterior and posterior left dorsal lobes. White arrow indicates pneumostome or breathing pore.