| 摘要 |
The present invention is related to a method for measuring the level of Her2 protein and truncated Her2 protein in a protein digest prepared from a biological sample of formalin-fixed tissue, comprising detecting and quantifying a peptide derived from the intracellular domain of Her2 in said protein digest prepared from said biological sample using mass spectrometry; and calculating the level of Her2 protein and truncated Her2 protein in said sample, wherein said peptide is the peptide of SEQ ID NO:7 and wherein said level is an absolute level of both versions of the Her2 protein. |
