Source:http://linkedlifedata.com/resource/umls/id/C1521913
NCI: When chromosomes at a particular stage in cell division are stained using one of several laboratory techniques, a specific pattern of light and dark stripes (bands) appears when the chromosomes are viewed through a microscope; the banding pattern assists in assigning each chromosome its particular number and evaluating its structure.,NCI: Chromosomal bands observed after staining with specific dyes. The band pattern is the result of differential interactions between the dye and nonadjacent chromosomal regions.