P Boardman

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Studies of cell lineage in the rat cerebral cortex have provided new insights into the mechanisms of neuronal and glial determination. They have shown that clonally related cells, marked with retrovirus injection at embryonic day 16 (E16), express the same glial or neuronal phenotype, suggesting that separate progenitors for each of these cell phenotypes(More)
lites after repeated ingestion of sodium metaarsenite by volunteers. Biological monitoring of arsenic exposure of gallium arsenide-and inorganic arsenic-exposed workers by determination of inorganic arsenic and its metabo-lites in urine and hair. Am Ind Hyg Assoc J 50:606-612 (1989). micronuclei in exfoliated bladder cells of persons who chronically ingest(More)
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