Uteroglobin, previously called CCPBP, CC10 or blastokinin, is a small secreted protein of the secretoglobin (family 1A, member 1). Uteroglobin is expressed by Clara cells, the non-ciliated, non-mucous secretory cells predominant in lung bronchioles, and by other epithelia that communicate with the external environment. Uteroglobin binds to phospholipids and to several cell types, inhibiting inflammation, migration and invasion. It has been reported to bind the lipocalin-1 receptor. The mature 70aa protein forms a disulfide-linked heterodimer of 16kD.