Prognostic Factors in Pancreatic Endocrine Neoplasms: An Analysis of 136 Cases With a Proposal for Low-Grade and Intermediate-Grade Groups PURPOSE: The HER-2/neu protein is a nonmutated tumor antigen ...
In the 1880's and 1890's, Robert Koch established that a different microbe causes each infectious disease. Koch defined a process by which a specific causative organism could be identified by ...
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