Migrazione di cellule dell'epidermide e dell'epitelio intestiuale durante la rigenerazione dei Lombricidi

Summary

In th epresent work, caudal regeneration in Allulobophora caliginosa has been studied, following a simple tranverse cut two or three segments behind the elitellum. It is pointed out that all the data put forward (ecllular migrations) requires a confirmation by means of the use of a more adequate technique: this data show, anyhow, a high degree of probability.

If one could demonstrate that the cellular migrations exist effectively, one could affirm that both cells from the regenerated epidermis and cells from the regenerated intestinal epithelium participate in the formation of the mesodcrmic hands of the regenerative hud, that the central part of the nephridia and probably the dissepiments are formed by the participation of cells from the regenerated epidermis, and that the cells from the intestinal epithelium provide, not only the regeneration of this same intestinal epithelium, but also the regeneration of tissues of a non-cntodermic nature. It is affirmedalso that, given as definite the cellular migrations, we lack definite foundations for the demonstration of the somatic totipotenza of the cetodermie-type cells.