Expression of mucin core peptides and carbohydrate-associated antigens in primary colorectal carcinomas compared with their regional lymph node metastases: M.M. Yeh; M.H. Sleisenger; R.D. Bui; D. Lum; C.K. Montgomery; K.R. McQuaid; N.W. Toribara; Q. Duh; Y.S. Kim. Colorectal Cancer Program, Depts. of Med., Path., & Surg., Univ. of Calif. S.F., GI Research Lab, VA Med Center, S.F., CA