Zhang and his co-workers performed behavioral tests on two purified cannabinoids. The test results indicated that these two cannabinoids have anti-anxiety and antidepression-like effects in rats that may depend on the ability of cannabinoids to promote the production of new neurons in the hippocampus. Marijuana contains a complex mixture of chemicals including cannabinoids and may have somewhat different behavioral effects than the purified cannabinoids tested so far.
Zhang and his co-workers performed tests on cannabinoyds
I misspelled the word making the statement incorrect.
( z1 test :ARG0 ( z2 and :op ( z3 person :name ( z4 name :op "Zhang" ) ) :op ( z5 person :ARG0-of ( z6 work :ARG1 z3 ) ) ) )