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. 1974 Nov 22;186(4165):740-1.
doi: 10.1126/science.186.4165.740.

Normal skin test responses in chronic marijuana users

M J Silverstein, P J Lessin

Normal skin test responses in chronic marijuana users

M J Silverstein et al. Science. .

Abstract

The cell-mediated immunity of 22 chronic marijuana smokers showed no difference from that of normal controls when evaluated by in vivo skin testing with 2,4-dinitrochlorobenzene. However, a significant difference was seen between these chronic marijuana users, all of whom could be sensitized to 2,4-dinitro-chlorobenzene, and age-matched cancer patients, who showed a decreased capacity to be sensitized.

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