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Hemopoietic tissue in the adult newt, Notopthalmus viridescens

James A Hightower1, Ronald L St Pierre1

  • 1Department of Anatomy, College of Medicine, The Ohio State University, Columbus, Ohio 43210.

Journal of Morphology
|October 31, 2018
PubMed

The presence of developmental stages of lymphocytes and their precurors, as revealed by serial and thin sections of hemopoietic organs of normal adult newts (Notopthalmus viridescens) suggests that lymphopoiesis is limited to the thymus, medulla of the spleen and, to a lesser degree, the intestine. Stromal cells, small lymphocytes, granulocytes, mature erythrocytes and melanocytes were observed either within or near the parenchyma of the thymus. The urodele thymus differs from the thymus of anurans and higher vertebrates in that it lacks a cortex and a medulla, myoid cells and Hassall's corpuscles.

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