In publishing the research results obtained by use of the BIOLOGICAL RESOURCE, citation of the following literature designated by the DEPOSITOR is requested:

Construction of Escherichia coli-Bifidobacterium longum shuttle vector transforming B. longum 105-A and 108-A.
Matsumura, H., Takeuchi, A., Kano, Y.
Biosci. Biotechnol. Biochem. 61: 1211-1212, 1997.