the expression of the embryonal and of the differentiational proteins in 12 cases of chordoma and in the notochord of a 4-month-old and a 5-month-old human embryo have been examined immunohistologically by the abc method using polyclonal antibodies to cea , afp , or s-100 , and the monoclonal antibody to cytokeratin .
C0028439
notochord
C0868971
human