SRS568289 SAMN02680258 PCOLI_3-475-03S1C2 Escherichia coli 3-475-03 S1 C2 1444087 Escherichia coli 3-475-03_S1_C2 collection-date 16-Jan-2009 country Tanzania isolation-source stool nat-host Homo sapiens strain 3-475-03_S1_C2