Polyploidy in the Freshwater Snail Lymnaea Stagnalis (Gastropoda, Pulmonata). a Cytophotometric Analysis of the Dna in Neurons and Some Other Cell Types
- 1 January 1976
- journal article
- research article
- Published by Brill in Netherlands Journal of Zoology
- Vol. 27 (3) , 245-252
- https://doi.org/10.1163/002829677x00090
Abstract
Feulgen-stained nuclei of neurons and of some other cell types of the freshwater snail Lymnaea stagnalis were measured cytophotometrically. The DNA content of neurons doubles a number of times during the life of the snail. Randomly chosen neuronals nuclei appeared to fall within distinct DNA classes. In 30 mm (shell height) animals all classes up to that of 4096C are present in the central ganglia. It was estimated that a 4096C nucleus contains 2.4 × 10-3 μg DNA. The functional significance of neuronal polyploidy is not clear. Intestinal epithelium cells are diploid. Intestinal gland cells, Sertoli cells, pore cells and Calcium cells attain DNA values of 16C.Keywords
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