Evidence of Sea Star Monocytes Evolving in Phagocytes: Observations in T.E.M in Asterias Rubens

Michel Leclerc

Immunology of Invertebrates, Orléans University, France

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

Keywords: Invertebrates; Sea Star; Monocytes; Lymphocytes; Macrophages; Platelets


Sea star Axial organ (A.O) cells were observed in T.EM: Evidence of primitive monocytes was done: They contained azurophile particles and a reniform nucleus, sometimes a phagosome appeared and amoeboïd images were seen. These cells, in a second time, evolves mainly in phagocytes which may be assimilated to Vertebrate Macrophages, with functional phagosomes and azurophile particles. The sea star monocytes are smaller in diameter (4 to 5μ) than Vertebrate ones.

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