RACK1 and melanoma: More specifically, 62.69% (42/67) of the melanoma tissues showed strong or moderate staining (+++/++) and 37.31% (25/67) showed weak staining (-/+) of RACK-1, while most of control normal skin and benign tissues showed weak staining (-/+), 91.30% (21/23) and 100% (17/17), respectively.