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Beta;-ラクタム系抗生物質の最初はペニシリンである ペニシリンはβ-ラクタム環をもつことを特徴とする一群の抗生物質である この群はペニシリン 5員環をもつ とセファロスポリン 6員環をもつ の2つに分けられる.
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Welcome to the Fotothing forum! Non-Fotothing chat and general discussion. Share your photography tips and ask questions here. Share tricks and tips for getting the most from your software. Competitions, Contests, Fun and Games. Photography Competitions, Contests and Challenges.
This is the last post in my 4 part series. The previous posts in this series covered the basics for creating .
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