Original Papers
Vol. 46 No. 2 (2002)
https://doi.org/10.4081/1669

Engagement of the periesophageal ring during Holothuria polii response to erythrocyte injection

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Received: 9 January 2010
Accepted: 9 January 2010
Published: 9 January 2009
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Authors

G D'Ancona Lunetta
dancona@unipa.it
Istituto di Istologia ed Embriologia, Dipartimento di Biologia, Università di Palermo, Italy.
ML Michelucci
Dipartimento di Matematica e Applicazioni, Università di Palermo, Italy.
In Holothuria polii, the periesophageal ring is an important organ supplying spherule cells after stimulation with foreign material. In animals injected with formalinized sheep erythrocytes, in fact, a depletion of spherule cells is observed in the periesophageal ring, whereas in the connective tissue, in the external epithelium and around the antigen- injected site, small, transparent cells can be visualized. It is supposed that the latter are stem cells of spherule cells.

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1.
D'Ancona Lunetta G, Michelucci M. Engagement of the periesophageal ring during Holothuria polii response to erythrocyte injection. Eur J Histochem [Internet]. 2009 Jan. 9 [cited 2026 Apr. 15];46(2):185-94. Available from: https://www.ejh.it/ejh/article/view/1669