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Updated: May 9, 2025
Porak has recently investigated the passage of substances foreign to the organism through the placenta, and offers an excellent paper on this subject, which is quoted in brief in a contemporary number of Teratologia.
In this important paper, Porak, after giving some historical notes, describes a long series of experiments performed on the guinea-pig in order to investigate the passage of arsenic, copper, lead, mercury, phosphorus, alizarin, atropin, and eserin through the placenta.
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