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Experientia

, Volume 1, Issue 9, pp 335–336 | Cite as

Di alcuni fenomeni corticali che accompagnano la fecondazione e le prime divisioni dell'uovo di riccio di mare

  • A. Monroy
Vorläufige Mitteilungen

Summary

It is shown that the positive cortical double refraction of the unfertilized sea-urchin egg demonstrated in polarized light disappears on fertilization and reappears with the beginning of the anaphase. During the telophase the double refraction disappears again. It has been found that this phenomenon is in some way connected with the changes of the cytoplasmic colloids.

References

  1. 1.
    A. Monroy eA. Monroy Oddo, Boll. Soc. it. Biol. sper. XIX, p. 70 (1945); Pubbl. Staz. Zool. di Napoli (in corso di pubblicazione).Google Scholar
  2. 2.
    F. O. Schmitt eR. S. Bear, J. cell. comp. Physiol. IX, p. 261 (1937).CrossRefGoogle Scholar
  3. 3.
    A. Monroy eA. Monroy Oddo, Boll. Soc. it. Biol. sper. XIX, p. 70 (1945); Pubbl. Staz. Zool. di Napoli (in corso di pubblicazione).Google Scholar
  4. 4.
    K. Dan, T. Yanagita eM. Sugiyama, Prot. XXVIII, p. 66 (1937).Google Scholar

Copyright information

© Birkhäuser Verlag 1945

Authors and Affiliations

  • A. Monroy
    • 1
  1. 1.Stazione Zoologica di NapoliItaly

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