Microanatomy of the trophosome region of Paracatenula cf. polyhymnia (Catenulida, Platyhelminthes) and its intracellular symbionts
Symbiosis, Life Sciences, Trophosome, Platyhelminthes, Ultrastructure, Paracatenula, Developmental Biology, Evolutionary Biology, Animal Anatomy / Morphology / Histology, Animal Systematics/Taxonomy/Biogeography