| http://www.w3.org/ns/prov#value | - des the 3??? untranslated region.19 The 40-bp VNTR element is mainly repeated either 9 or 10 times, with the 9-repeat (9R) form most likely reducing DAT expression20, 21, 22, 23, 24 (but see Dyck et al.25) and thus presumably enhancing extrasynaptic striatal DA levels, in particular, during phasic DA release.18 Hence, if the mesostriatal DA system is involved in extinction in the fashion outlined
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