Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Immunohistochemical staining showing scanty MSH6 staining in a colonic adenocarcinoma; a and b represent two areas from one tumor where there is distinct nuclear staining for MSH6, but the staining is present only in a limited number of tumor cells. Note the presence of tumor-infiltrating lymphocytes that stain positively for MSH6. This tumor has intact expression of MSH2 and complete loss of MLH1 and PMS2 (staining not shown).
