Objective: To explore the expression series of ID4 gene in normal and malignant tissues or cells as a primary work for studying the regulation mechanism of ID4 gene.

目的：分析ID 4基因在正常组织细胞和癌变组织细胞中的表达情况，为研究该基因的表达调控机制奠定基础。

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In the previous articles in this series, we discussed the JSTL and its expression language (EL).

在本系列的前几篇文章中，我们讨论了JSTL及其表达式语言(EL)。

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To prove his point, he took a series of portraits, using the same model's facial expression and the same lighting - but each time changing the lens.

为了证明他的观点，他利用相同的照明条件，为一位模特的同一面部表情拍摄了一组肖像照，但是每照一张就更换一种镜头。

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She was cast in a series called Pardon the Expression, a comedy spin-off from Coronation Street, before retiring and then appearing on Coronation Street.

BBC: Coronation Street actress Betty Driver dies, aged 91

Although there are several works showing the two in intimate embrace, Bella's expression is always wistful, giving the series a tender but melancholy feel.

BBC: Chagall and the art of passion and drama

Mr. Najib announced plans to repeal the colonial-era legislation as part of a series of political reforms aimed at allowing greater freedom of expression in this still tightly policed nation of 28 million.

WSJ: Malaysia Arrests Activists