Match each of the options above to the items below:
multipurpose technique for live and preserved specimens; specimen is dark, field is white
best for live, unstained specimens; specimen is bright, field is black
specimen is contrasted against a gray background, well-suited to visualize intracellular structures
provides detailed, high-contrast images of live specimens
used to provide high-resolution images of internal structures of cells and viruses
used to capture surface images of cells and viral particles