Objective To investigate the expression and the significance of cathepsin D(CD) and matrix metalloproteinase-9(MMP-9) in oral squamous cell carcinoma(OSCC).

目的探讨组织蛋白酶D（CD）与基质金属蛋白酶-9（MMP-9）在人类口腔鳞癌（OSCC）中的表达意义。

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After treated for 21 d, the mice were sacrificed and liver metastasis rate and liver metastasis nodule Numbers were observed. Expression of CD gene in liver metastasis tissues was determined by RTPCR.

治疗21 d后处死裸鼠，观察肝脏转移率和转移结节数，RTPCR检测CD基因在肿瘤组织的表达，光镜及电镜下观察肿瘤病理学的变化。

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In 1984 Sony did it again with the D-50 portable CD player, offering near-audiophile fidelity on a much more durable medium.

FORBES: TRACKING THE EVOLUTION OF TAKE-OUT TUNES