Further studies of peripheral blood CD4+ T cells expression of chemokines show no difference between the Th1-associated chemokine receptors CXCR3 and CCR5 or the Th2-associated chemokine receptor CCR4 in patients suffering from intermediate uveitis (enrollment of patients includes idiopathic and presumed sarcoid intermediate uveitis) compared to healthy controls as well as active compared to inactive disease (Murphy et al. 2004). Here, CD4 is linked to intermediate uveitis.