Yoshimura K, Meckel KF, Laird LS, Chia CY, Park JJ, Olino KL, Tsunedomi R, Harada T, Iizuka N, Hazama S, Kato Y, Keller JW, Thompson JM, Chang F, Romer LH, Jain A, Iacobuzio-Donahue C, Oka M, Pardoll DM, Schulick RD. Integrin alpha2 mediates selective metastasis to the liver. Cancer Res. 2009 Sep 15; 69(18):7320-8.