CCL28, also named as SCYA28, CCK1 and MEC, belongs to the intercrine beta (chemokine CC) family. It has chemotactic activity for resting CD4, CD8 T-cells and eosinophils. CCL28 binds to CCR3 and CCR10 and induces calcium mobilization in a dose-dependent manner. CCL28 is expressed in a variety of human and mouse tissues, and it appears to be predominantly produced by epithelial cells. It is produced by epithelial cells of these tissues suggesting that this chemokine can play an important role by linking homing mechanisms between the gut, nasal mucosa and mammary gland (MG). In WB test, CCL28 is 14kd and 8-9kd(a putatively to a degradation fragment).