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The range of variability in the population distribution characteristics of sperm DNA content was surveyed in a selected group of donors. The donors included identical twins, carriers of chromosomal translocations, and oligospermics. The DNA content of sperm was measured individually in an automated cytofluorometer. In contrast to normal donors with high sperm counts and relatively constant modal values of sperm DNA, the balanced carriers of translocations were oligospermic and showed wide dispersion of modal values. This is an unexpected finding, since reciprocal events in the alternate form of segregation, which occurs predominantly in male carriers of balanced translocations, should not alter modal values of sperm DNA nor should they be associated with oligospermia. It appears that sperm DNA content in oligospermia, independent of its association with translocation, varies over a wide range. Thus, it is likely that genetic factor(s) unrelated to chromosome translocation control sperm DNA content.
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N Shioura
November 1993,
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W Centerwall, and
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N Shioura
September 1994,
The Indian journal of medical research,
S Sarkar, and
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April 2015,
Molecular human reproduction,
S Sarkar, and
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January 1996,
Archives of andrology,
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April 1985,
British journal of urology,
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W Centerwall, and
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January 1984,
Progress in experimental tumor research,
S Sarkar, and
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W Centerwall, and
E T Tyler, and
N Shioura
September 1983,
Radiation research,
S Sarkar, and
O W Jones, and
W Centerwall, and
E T Tyler, and
N Shioura
March 2003,
Human reproduction (Oxford, England),
S Sarkar, and
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W Centerwall, and
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N Shioura
August 1998,
The Japanese journal of thoracic and cardiovascular surgery : official publication of the Japanese Association for Thoracic Surgery = Nihon Kyobu Geka Gakkai zasshi,
S Sarkar, and
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W Centerwall, and
E T Tyler, and
N Shioura
May 1990,
Cancer,
