Preincubation with neutralizing antiCD204 blocked the collagen type I induced increase in CCL18 protein expression of both normal AM (p=0.02, Figure 4A) and IPF AM (p=0.01, Figure 4B), whereas preincubation with either antiCD11b or antiCD36 showed no decrease in CCL18 mRNA or protein levels (data not shown). Here, CCL18 is linked to idiopathic pulmonary fibrosis.