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(回答先: 遺伝子組み換え細菌を口腔内常在菌にしてしまうのはいかがなものか。 投稿者 どっちだ 日時 2004 年 7 月 23 日 01:31:01)
つまり、遺伝子組み換え細菌を口の中で飼育し続けるためには、ずーっと秘密のわけわかな物質が含まれたガムかリンスを使い続ける必要があるってことです。だから、そんな特殊物質を供給してない第三者には遺伝子組み換え細菌は感染しない仕掛けなんですね。
このガムやリンスのコストは書いてありません。良い鴨だよ。>歯科医殿
http://abcnews.go.com/sections/scitech/DailyNews/cleanteeth020220.html
Recently they tweaked the bacterium again so it would only survive if fed a particular nutritional supplement. That ensures the bacterium won't spread from one person to another while kissing or sharing utensils.
"Subjects will have to chew gum or use mouthwash to provide the bacteria with its nutritional supplement," said Hillman.
When Hillman squirted the strain on rats, the substance appeared to prevent tooth decay in the animals for the entire six-month period of the tests. He has also squirted a version of the bacterium on three human volunteers.
The strain these people harbor in their mouths kills off the S. mutans bacterium, but does not prevent decay since it also produces lactic acid. Tests show the strain has successfully warded off all S. mutans bacteria since the early 1980s. And none of the three subjects have passed on their unique mouth bacteria to their spouses or children.