Source:http://linkedlifedata.com/resource/umls/id/C0025564
GO: Metaphase occurring as part of mitosis. Metaphase is the part of nuclear division in which, canonically, chromosomes become aligned on the equatorial plate of the cell. Mitosis is the cell cycle process in which, canonically, the nucleus of a eukaryotic cell divides to produce two daughter nuclei whose chromosome complement is identical to that of the mother cell. [ISBN:0815316194],NCI: The second phase of mitosis, in which the chromosomes line up across the equatorial plane of the spindle prior to separation.