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Science 21 July 1967:
Vol. 157. no. 3786, pp. 313 - 314
DOI: 10.1126/science.157.3786.313
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Articles

Chromosomal Abnormalities in Leukocytes from LSD-25 Users

Samuel Irwin 1 and Jose Egozcue 2

1 Department of Psychopharmacology, Oregon Regional Primate Research Center, and Department of Psychiatry, University of Oregon Medical School, Portland
2 Department of Genetics, Oregon Regional Primate Research Center, Beaverton

A significant increase of chromosomal abnormalities was found in leukocytes from LSD-25 users (six out of eight) compared to nonuser controls (one out of nine). The two LSD-25 users showing no damage reported the lowest estimated average dose. The subjects whose cells showed damage were tested between 1 day and 6 months after their last LSD-25 dose.


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