AIM: to investigate the association between the matrix metalloproteinase-9 (MMP-9) gene C1562T polymorphism and the susceptibility to unstable angina pectoris (UAP) in Han population of South China.

目的：了解基质金属蛋白酶9基因C1562T多态性与中国南方汉族人群不稳定型心绞痛易感性的关系。

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Greg Bower(ph), of the International Association of Bomb Technicians and Investigators, says nitroglycerin is usually too unstable to handle safely.

NPR: It's Hard to Spot a Liquid Threat to Airline Safety