Fine structural observations of the granulocytes involved in the tunic inflammatory-like reaction of Ciona intestinalis (Tunicata).

Erythrocytes injected into the tunic of Ciona intestinalis induced an inflammatory-like reaction which can cause lysis of the neighboring tissue. Electron microscopy observations of the granulocytes of the injured tunic show lysosomic figures and degranulations features suggesting granulocyte involvement in the destructive process.