Abstract
Summary
From estimates of galactose-1-phosphate uridyl transferase levels in red cells it has been estimated that galactosemia in humans may occur as frequently as 1 in 18,000 births. Since galactosemic hetero-zygotes are generally asymptomatic the identification of a heterozygote of maternal origin among the mentally retarded suggests the possibility that the symptomology may have resulted from inadequate metabolism of ga-lacose by the mother during maternity.
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