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Chromosome studies in 172 cases 01 induced abortions are reported. The material comprising 212 cultures war obtained from fetal skin, placenta, amnion, mid amniotic fluid cells. Six fetuses with aberrations (3.48 %) were detected, namely two 47,XX, +C, one 47,XX,+E, one 47,XY,+G, one. 46,XX/47,XX,+C, and one 46,XX/47,XX, +G. The average maternal age for the total material was 26.5 years and for the aberrations 33.6 years. The average gestational age for the total material was 12 1/2 weeks and for the aberrations 10 1/2 weeks. The sex ratio was 0.88 for the abortions of the first trimester and 1.30 for those of the second trimester.
Niels Hahnemann (Sun,) studied this question.
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