NC_015052.1 Bifidobacterium longum subsp. infantis 157F DNA, complete genome 2400312 NC_015053.1 Bifidobacterium longum subsp. infantis 157F plasmid p157F-NC1 DNA, complete sequence 4895 NC_015066.1 Bifidobacterium longum subsp. infantis 157F plasmid p157F-NC2 DNA, complete sequence 3624