CCN intercellular signaling protein

CCN intercellular signaling protein is a family of proteins.

It includes:
 * CCN1: cysteine-rich 61 (CYR61)
 * CCN2: connective tissue growth factor (CTGF)
 * CCN3: nephroblastoma overexpressed (NOV)
 * CCN4: Wnt-induced secreted protein-1 (WISP1)
 * CCN5: Wnt-induced secreted protein-2 (WISP2)
 * CCN6: Wnt-induced secreted protein-3 (WISP3)