Source:http://linkedlifedata.com/resource/umls/id/C0039066
MSH: The three-part structure of ribbon-like proteinaceous material that serves to align and join the paired homologous CHROMOSOMES. It is formed during the ZYGOTENE STAGE of the first meiotic division. It is a prerequisite for CROSSING OVER.,GO: A proteinaceous scaffold found between homologous chromosomes during meiosis. [GOC:elh]