百度云网盘下载：http://pan.baidu.com/s/1qY3TTms
DVDs can be requested free of charge by simply adding a note to your online order.
To choose a chapter, play the video and select the required chapter from the options on the video display.
Chapter 1: Theory of endo - 1, 4-Beta-D-Xylanase Assay Procedure
Chapter 2: Buffers & Reagents
Chapter 3: Assay Procedure
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