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Science. 1974 Nov 22;186(4165):740-1.

Normal skin test responses in chronic marijuana users.


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.

[Indexed for MEDLINE]

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