Chromosomal Abnormalities in Leukocytes from LSD-25 Users

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Science  21 Jul 1967:
Vol. 157, Issue 3786, pp. 313-314
DOI: 10.1126/science.157.3786.313


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.