Abstract: This invention provides a method for efficiently detecting DNA methylation. The method for detecting DNA methylation comprises subjecting DNA to bisulfite treatment, subjecting DNA after bisulfite treatment to a first PCR, subjecting the resultant to nested PCR, and subjecting amplified DNA to denaturing gradient gel electrophoresis.

Abstract: The present invention provides means and a method assuring the effectiveness of early diagnosis of cancers including gastric cancers. Specifically, the present invention provides an antibody, which is prepared using, as an antigen, (a) a peptide comprising at least contiguous amino acids at positions 69 to 75 in the amino acid sequence of SEQ ID NO: 2, or (b) a peptide consisting of an amino acid sequence in which one or several amino acids are deleted, substituted or added in at least contiguous amino acids at positions 69 to 75 in the amino acid sequence of SEQ ID NO: 2, and having the antigenicity of human MUC1 protein, and which is reactive with human mucin 1 (MUC1) protein.

Abstract: This invention is intended to provide a method capable of diagnosis of pancreatic tumor type at an early stage. More specifically, this invention relates to an examination method for determining pancreatic tumor type comprising detecting the degree of methylation in a 5?-untranslated region or a region comprising a 5?-untranslated region and a translated region of a gene encoding a mucin core protein in a pancreatic fluid sample from a subject, and identifying the pancreatic tumor as being of pancreatic tumor type selected from the group consisting of pancreatic ductal adenocarcinoma, an intraductal papillary mucinous neoplasm of the gastric type, an intraductal papillary mucinous neoplasm of the intestinal type, and an intraductal papillary mucinous neoplasm of the pancreatobiliary type using the degree of methylation as an index value.

Abstract: This invention provides a method for efficiently detecting DNA methylation. The method for detecting DNA methylation comprises subjecting DNA to bisulfite treatment, subjecting DNA after bisulfite treatment to a first PCR, subjecting the resultant to nested PCR, and subjecting amplified DNA to denaturing gradient gel electrophoresis.

Abstract: The present invention provides means and a method assuring the effectiveness of early diagnosis of cancers including gastric cancers. Specifically, the present invention provides an antibody, which is prepared using, as an antigen, (a) a peptide comprising at least contiguous amino acids at positions 69 to 75 in the amino acid sequence of SEQ ID NO: 2, or (b) a peptide consisting of an amino acid sequence in which one or several amino acids are deleted, substituted or added in at least contiguous amino acids at positions 69 to 75 in the amino acid sequence of SEQ ID NO: 2, and having the antigenicity of human MUC1 protein, and which is reactive with human mucin 1 (MUC1) protein.

Abstract: The invention relates to a process for producing a fucosyl antigen charcterized in that an oligosaccharide contaning an .alpha.-fucoyransoyl-(1.fwdarw.3)-, -(1.fwdarw.4)- or -(1.fwdarw.6)-galactoyransoyl group and serving as a hapten is reacted wtih a carrier protein to obtain a carbohydrate antigen and to a process for producing from the antigen an antibody having specific reactivity with cells of cancers of the digestive system, especially human colon carcinoma cells, and murine teratocarcinoma cells.The invention also relates to a method of determining a cancer associated crabohydrate linkage with use of such antibody capable of specifically recognizing specific carbohydrate linkage and to a cancer diagnosing kit containing the antibody.