B variant GM2 gangliosidosis
noun[U]
medicalspecializeduk/ˌbiː veə.ri.ənt dʒiː.emˌtuː ˌɡæŋ.ɡli.əʊ.sɪˈdəʊ.sɪs/us/ˌbi ver.i.ənt dʒiː.emˌtuː ˌɡæŋ.ɡli.oʊ.sɪˈdoʊ.sɪs/(alsoTay-Sachs disease);(abbreviationTD)ageneticdiseasein which thebodyisunableto getridof afattysubstancecalled ganglioside so that itbuildsup in thebrain. Thiscausesthenervestostopworkingproperlyandeventuallyleadstodeath, usually before theageof three
GM2神经节苷脂病变异型B,GM2神经节苷脂沉积症变异型B