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Latent Menstrual Cycle in Pre-Menarcheal Monozygotic Twins

Published online by Cambridge University Press:  01 August 2014

I. Nakamura ,
C. Harada  and
T. Miura
I. Nakamura*
Affiliation:
Japan Women's College of Physical Education, Tokyo
C. Harada
Affiliation:
Japan Women's College of Physical Education, Tokyo
T. Miura
Affiliation:
Teikyo University School of Medicine, Tokyo
*
Japan Women's College of Physical Education, Kita-Karasuyama, Setagaya-ku, Tokyo 157, Japan

Abstract

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The distribution of menarcheal interval-length between cotwins in 67 pairs of female identical twins in Tokyo was found to cluster at fairly constant intervals. When delayed in one twin, the menarche occurred in the second twin at intervals of approximately 28 days after that of the earlier twin. This finding suggests the existence of a latent lunar or menstrual cycle in pre-menarcheal girls, evidence for which was detected by recording the menarcheal intervals between MZ cotwins in days.

Keywords

Latent menstrual cyclePre-menarchealMonozygotic female twins
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 42 , Issue 3-4 , October 1993 , pp. 295 - 297
Copyright
Copyright © The International Society for Twin Studies 1993

References

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