Article in Japanese

The transition of nasopharyngeal bacteria in one year after the entrance of kindergarten -referring to the natural immunity to Hib-

Hajime Takeuchi^1,2), Kayoko Yamagami¹⁾, Satoshi Shimada¹⁾

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Key words
Received	August 1, 2007
Accepted	September 6, 2007

19 (4)：399─403,2007