光密度是材料所具有的能减缓光的传播速度并产生折射（折光）效应的一种复杂的特性。
The concentration of lovastatin correlated with MMP-2 protein integral optical density negatively(r=-0.
洛伐他汀浓度与MMP-2蛋白的积分光密度呈负相关(r＝-0.734，P＜0.01)。
参考来源 - 洛伐他汀对巨噬细胞基质金属蛋白酶The parallelism and stability of the new method is better than Bens and Optical Density Assay,RSD＜3%.
该方法与传统方法本斯法、光密度法相比,平行性和稳定性最好,RSD＜3%。
参考来源 - 麦芽中酵母超前絮凝多糖及其对啤酒发酵的影响研究·2,447,543篇论文数据，部分数据来源于NoteExpress
对血细胞图像进行数学形态学，彩色光密度和纹理特征的提取。
Using mathematics morphology on the abstraction of chromatic light density and veins characteristic of the blood cell image.
结果表明：抗氧剂的使用可提高热敏层的饱和光密度，使涂层的反射光密度达到1。
The results show that the saturated color density is improved by addition of antioxidant, and the reflection optical density reached 1.
采用聚合酶链反应（PCR）技术和光密度扫描检测两组线粒体DNA的缺失突变情况。
Deletion mutation state of the two groups of mitochondria DNA were detected by PCR technology and photodensity scan.
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