1. A tissue-slice image acquirement and display apparatus comprising: an entire-image acquirer configured to: acquire a bright-field image of an entirety of a first slice of a tissue; and acquire a dark-field image of an entirety of a second slice of the tissue; a modifier configured to: extract a bright-field profile shape of the first slice portion within the bright-field image; extract a dark-field profile shape of the second slice portion within the dark-field image; modify the dark-field profile shape by: aligning positionally the bright-field image with the dark-field image, and replacing the dark-field profile shape of the second slice portion with the bright-field profile shape of the first slice portion for the dark-field image; a magnified-image acquirer configured to determine a range encompassing the second slice on a basis of the dark-field profile shape modified by the modifier and that acquires, in a dark field, a magnified image of the second slice in the determined range; and a display controller configured to cause the bright-field image to be displayed and cause a portion of the magnified image, the portion corresponding to a position selected in the bright-field image, to be displayed.