"Stained sections" typically refers to tissue samples that have been treated with dyes or stains in order to make certain structures or cells easier to observe under a microscope. Full definition
Definitive diagnosis relies upon microscopic examination of stained sections of actual pieces of tumor (histopathology). (brittonroadveterinaryclinic.com)
Quantification of total fiber number from laminin / DAPI - stained sections revealed a 28 % greater number of total muscle fibers in EDL muscles and a 29 % greater number of total muscle fibers in TA muscles from IL - 15Rα — KO mice compared with B6129 controls (Figure 6, A and E). (jci.org)
For morphometric analysis, the gastrocnemius and plantaris muscles were sectioned serially to their widest point using a cryostat, and fiber diameters were measured (as the shortest distance across the fiber passing through the midpoint) from hematoxylin and eosin stained sections. (journals.plos.org)