In normal physiological conditions, and ordinary people used to eat three meals a day.

在正常生理情况下，一般人习惯于一日三餐。

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These results indicated that NGAL showed a diverse functional pattern in various pathological and physiological conditions or in the various tissues and cells.

这些进展表明，在不同的病理生理状态或组织细胞时空条件下NGAL的功能表现形式是多样化的。

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Matrix metalloproteinase-9(MMP-9) participate in the development of the human body during physiological conditions, and can be activated in pathological conditions.

基质金属蛋白酶-9（ MMP-9）在生理情况下参与人体的发育。

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Obesity, excessive scar tissue from a previous surgery in the same area, disease that is more advanced than anticipated any one of these physiological conditions creates more work and a more difficult environment for the surgeon.

WSJ: Book Excerpt: Confessions of a Surgeon