The positive control cell line DNA was mixed in different proportions with the DNA extracted from reactive lymphoid tissue to test the sensitivity of the touch-down PCR.

阳性细胞系DNA模板与反应增生性淋巴组织DNA按不同比例混合后扩增，检测降落式PCR的灵敏度。

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Here is a normal parathyroid gland for comparison. Adipose tissue cells are mixed with the parathyroid tissue. The amount of fat varies somewhat.

作为对比，图示正常甲状旁腺。脂肪细胞与甲状旁腺组织混在一起。脂肪数量可有一定变化。

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Objective: To study the clinical features and treatments of mixed connective tissue disease.

目的：探讨混合性结缔组织病的临床特点及治疗方法。

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Pink slime occurs when sub-par beef scraps and connective tissue are mixed with ammonia to turn formerly inedible meat into edible ground beef.

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