The Problem of Sea Star Thrombocytes and Platelets in Asterias Rubens T.E.M and Genomic Observations

Michel Leclerc

Immunology of Invertebrates, Orléans University, France

Dr. Michel Leclerc, Immunology of Invertebrates, Orléans University, France.

Keywords: Invertebrates; Sea Star; Lymphocytes; Thrombocytes; Platelets


Sea star Axial organ (A.O) cells were observed in TEM. The axial organ has been described by us as a primitive lymphoïd organ in the years 1970. Sea star lymphocytes, platelets, have already been observed in previous works. They are smaller in diameter (4 to 5μ) than Vertebrate ones It seems to us that Thrombocytes exist also in this Invertebrate (TEM observations): Genomics asserts this last data.

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