Supported by A grant-in-aid for General Scientific Research from the Ministry of Education, Science, Sports and Culture to Hiroyuki Mitomi, No. 21590394;to Tsuyoshi Saito, No. 23590434, To-kyo, Japan
AIM: To clarify differences in mucin phenotype, prolif- erative activity and oncogenetic alteration among sub- types of colorectal laterally spreading tumor (LST). METHODS: LSTs, defined as superficial elevated le...
Aims: Ophthalmic pterygium is a potentially vision-threatening lesion of unkn own etiology, related to an exposure to solar light. Mutations to the ras genes are frequently observed in lesions related to an exposure t...
Supported by the Korea Health 21 R and D Project, Ministry of Health and Welfare, Republic of Korea. No. 00-PJ1-PG3-21900-0008
AIM: Hypermethylation of the promoter of the hMLH1gene, which plays an important role in mismatch repair during DNA replication, occurs in more than 30% of human gastric cancer tissues. The purpose of this study was t...
Background. The point mutations occurring in codons 12 and 13 of the Ki-ras gene are useful genetic markers to identify intratumoral heterogeneity. A single tumor crypt, which consists of monoclonal cells, can be obta...