お題は？「大きく息を吸って…」

★肺胞のalveoliは複数形（単数形はalveolus）。肺（lung）には両肺合わせて約6億個もの肺胞があり、毛細血管（blood capillary）との間でガス交換（gas exchange）が行われている。

Episode metadata supplied by the publisher feed · Published Dec 15, 2009

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お題は？「大きく息を吸って…」

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