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Mitotic complex in the cardiac field of chick embryos

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Summary

  1. 1.

    The mitotic peculiarity of the ventricle has been studied.

  2. 2.

    Diffused mitotic activity is noticed throughout the tissue matrix. No definite mitotic zone is seen. The total mitotic activity varies in the different regions as well as in different times of growth.

  3. 3.

    Except in 3 day heart, the rate of cell division is always more in the central area.

  4. 4.

    The ratio of dividing nuclei to resting nuclei in the peripheral region of 3 day heart is higher than that in the central region.

  5. 5.

    The most important item in the individuation of this organ is that the total percentage of dividing nuclei in the different stages, always present a slender figure. However, the cell increase is continuous.

  6. 6.

    The frequency is at its maximum. (11.03%) in 13 day heart, and the minimum (3.09%) in 21 day heart. The percentage of divisional figures in other stages fluctuates in between them. The cell increase in the heart continues even after hatching.

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Literature

  1. Bellairs, R.: Studies on the development of the foregut in chick blastoderm. I. The presumptive foregut area. J. Embryol. exp. Morph.1, 115 (1953a).

  2. —: Studies on the development of the foregut in chick blastoderm. II. The morphogenetic movements. J. Embryol. exp. Morph.1, 369 (1953b).

  3. —: Studies on the development of the foregut in the chick. III. The role of mitosis. J. Embryol. exp. Morph.3, 242 (1955).

  4. —: Studies on the development of the foregut in the chick. IV. Mesodermal induction and mitosis. J. Embryol. exp. Morph.5, 340 (1957).

  5. Davidson, J. N., andJ. Leslie: The changing cell number and composition of chick heart expiants growingin vitro. Exp. Cell Res.2, 366 (1951).

  6. Derrick, G. E.: An analysis of the early development of the chick by means of mitotic index. J. Morph.61, 257 (1937).

  7. Hughes, A.: The mitotic cycle. London: Butterworths Scientific Publ. 1952.

  8. Lillie, F. R.: Development of chick. Revised by A.Hamilton. New York: Henry Holt & Co., 1952.

  9. Mookerjee, S., and S.Adhikari: The phenomenon of cell incresse in chick gastrulation. (In the Press.)

  10. Mookerjee, S., and K.Balasubramaniam: Mitotic inactivity at the evocator competence interface. (In the Press.)

  11. Waddington, C. H.: Principles of embryology. London: George Alien and Unwin Ltd. 1956.

  12. Weiss, Paul: Specificity in growth control. In: Biological specificity and growth, p. 195, editE. G. Butler. Princeton: Princeton University Press, 1955.

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Mookerjee, S., Begum, N. Mitotic complex in the cardiac field of chick embryos. W. Roux' Archiv f. Entwicklungsmechanik 151, 498–503 (1959). https://doi.org/10.1007/BF00573356

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Keywords

  • Cell Division
  • Central Region
  • Developmental Biology
  • Central Area
  • Chick Embryo