Source:http://linkedlifedata.com/resource/umls/id/C1159467
GO: The directed movement of spermidine, N-(3-aminopropyl)-1,4-diaminobutane, a polyamine formed by the transfer of a propylamine group from decarboxylated S-adenosylmethionine to putrescine, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:krc, ISBN:0198506732]