Table 2

CB1 receptor affinity of [3H]CP55,940 and the concentration of CB1 receptors in brains of FAAH(+/+) and (−/−) mice

FAAH(+/+)FAAH(−/−)
K d 0.49  ± 0.07 nM0.66  ± 0.06 nM
B max 5.4  ± 0.1 pmol/mg5.9  ± 0.5 pmol/mg

Values represent means ± S.E. n = 3/group (seeMaterials and Methods for details).