Methology of the Subgross study
The following pages illustrate how Jensen and Wellings prepared samples of the human breast for Subgross examination. This study allowed them to visualize small lesions in the human breast in three dimensions. Their studies provided convincing evidence that the ealiest lesions occur at the level of the lobule and not in the collecting ducts. Gross examination is done with the naked eye. Subgross studies are performed at 2-10x magnification using a dissection microscope. Microscopic examination is done using the light, or electron microscope at 10X or greater magnification.
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