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BACKGROUND There is increasing concern that exposure to man-made substances that mimic endogenous hormones may adversely affect mammalian reproduction. Although a variety of reproductive complications have been ascribed to compounds with androgenic or estrogenic properties, little attention has been directed at the potential consequences of such exposures(More)
BACKGROUND It is well known that the fidelity of meiotic chromosome segregation is greatly reduced with increasing maternal age in humans. More recently, direct studies of human oocytes have demonstrated a striking age-related increase in oocytes exhibiting gross disturbances in chromosome alignment on the meiotic spindle. This abnormality, termed(More)
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