There is also evidence for reduced levels of binding of TSPO tracers to TSPO (previously known as the peripheral benzodiazepine receptor) on platelets in schizophrenia, with reductions of ~30% reported in some studies (Gavish et al., 1986; Weizman et al., 1986), although potentially only in certain sub-types of schizophrenia (Wodarz et al., 1998). Here, TSPO is linked to schizophrenia.