| pubmed-article:4555981 | pubmed:abstractText | Twelve chronic marijuana users received triangle up(9)-tetrahydrocannabinol by smoking. The magnitude of their pulse increment was highly correlated with their subjective experiences. Three of the 12 subjects subsequently received triangle up(9)-tetrahydrocannabinol labeled with carbon-14; the time course of its concentration in plasma was highly correlated with the pulse increment. Subjective symptoms, however, appeared later and dissipated more slowly. | lld:pubmed |
