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Expression of Crk adaptor proteins is associated with an increased proliferative index in human triple-negative breast tumors. Immunohistochemistry using antibodies to Crk, CrkL, and the proliferation marker Ki67 in triple-negative, grade III breast tumors.38 Panels on left show a tumor with high Crk protein and proliferative index. Panels on right show a tumor with low Crk protein and proliferative index.
