Lieberkühn organelle
The Lieberkuhn organelle (engl. Organelle of Lieberkühn or watch glass organelle ) is a lenticular light refracting formation of the outer skin ( Pelliula ) in the wall of the buccal cavity with ciliates of the suborder Ophryoglenina . The function of the organelle is unknown; involvement in the invasion of parasitic ciliates in their host is discussed.
literature
Graham C. Kearn: Leeches, Lice and Lampreys: A Natural History of Skin and Gill Parasites of Fishes . Springer Science & Business Media, 2004, ISBN 978-1-4020-2925-7 , p. 31 ( limited preview in Google book search).