| CPC A61K 35/745 (2013.01) [A23L 33/135 (2016.08); C12N 1/205 (2021.05); C12N 2500/34 (2013.01); C12N 2500/46 (2013.01); C12N 2500/74 (2013.01); C12N 2523/00 (2013.01); C12R 2001/01 (2021.05)] | 13 Claims |

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1. A composition, consisting of Bifidobacterium longum deposited at the Guangdong Microbial Culture Collection Center on Oct. 11, 2018, under accession number of GDMCC No. 60461 a phosphate buffer, and a freeze-drying protective agent, wherein the composition is freeze-dried.
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