Fig. 9 in Morphology, microanatomy and sequence data of Sclerolinum contortum (Siboglindae, Annelida) of the Gulf of Mexico

Fig. 9 Ultrastructure of pyriform glands of forepart a-e and trunk f. a Pyriform gland anterior to the frenulum b with cytoplasm containing amorphous secretion products (asterisk) and rER. c Pyriform gland posterior to the frenulum d with cytoplasm characterized by electrondark granules (asterisk) and Golgi complexes. e Detail of a pyriform