Eiko Matsunaga

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One hundred fifty embryos with holoprosencephaly were found among the total of 36,380 conceptuses obtained through induced abortion in the period from 1962 to 1974, giving an overall incidence of 0.4 percent. The occurrence was period from 1962 to 1974, giving an overall incidence of 0.4 percent. The occurrence was largely at random through time, and no(More)
We do not know how many mutations are being produced in human populations by exposure to environmental mutagens. If these mutagens caused a persistent rise in mutation rates, then ultimately there would be a proportional increase in the frequency of a variety of genetic diseases, including those that are difficult to treat and that require life-long care of(More)
Morphological data from 3,614 well-preserved human embryos derived from artificial termination of pregnancy were used to determine whether ectopic implantation or enlarged myomas could enhance the prevalence of localized malformations of the embryo. The frequency of malformed embryos was 11.6% among 43 recovered from ectopic pregnancies, 6.2% among 97 from(More)