——君主蝴蝶身上的彩色标记，也借机炫耀着自己的毒性，其目的是让掠食者们却步。
The Monarch Butterfly's colorful markings also flaunt its poisonous nature; their purpose is attained when predators are deterred.
作者用4种稳定性核素标记的支链氨基酸和芳香氨基酸对正常人与重型病毒性肝炎（重型肝炎）患者进行示踪动力学的研究。
The metabolic kinetics of branched chain amino acids (BCAA) and aromatic amino acids (AAA) in normal subjects and patients with severe viral hepatitis as studied with 4 stable isotope labeled tracers.
结论：合成的近红外标记的维甲酸造影剂可以用于检测人类骨肿瘤的异种移植，实现个体化分子诊疗的同时减少全身毒性。
Conclusion: Synthetic NIR-labeled retinoid agents can be used to detect human cancer xenografts as the agent is internalized by cancer cells, and it can reduce systemic toxicity.
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