FIGURE 6 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM

FIGURE 6. Section images of O. margoi using the micro-CT technology. A, B, C. Coronal progressive sections of the trachelosome showing the ganglionic mass (gm) surrounding the alimentary tract between the proboscis (pr) and the oesophagus (oe). The proboscis start from a small mouth (m). The first section (a) shows the sopraesophageal ganglion (sg), than the ganglionic mass expand down of the oesophagus (oe) (b, c). D, lateral section at the exact half of the body. The brain (br) overcome by a gland-like structure (gls) and surrounds the proboscis (pr). The oesophagus (oe) is forming a loop on the top of the atrium and in the ventral part is visible the genital atrium (ga). E, lateral section before the half of the body. Two columns of denser glands cells (gl) are passing through the oesophagus's loop (oe). F, transversal section on the male organs. The atrium (oe) is tied to the celomic cavity trough a connection (cn) and overcome by the muscular bulb (mb) and the anterior crop (ac). G, antero-coronal section of the body showing the oesophagus (oe), the four column of glands (gl) and the atrium (a). Scale bar = 1mm.