新来港学童延释放出超过4小时内小肠相比，1.5小时的生物半衰期为新来港学童生活中的血液。
NAC Sustain releases in the small intestine over a 4 hour period, compared to the 1.5 hour biological half-life of NAC in the bloodstream.
结论通过聚乙二醇的修饰，使RTA生物半衰期大大延长，且修饰后能避免肝脏、脾脏的摄取，并靶向到肿瘤组织。
CONCLUSION the biologic half-life of RTA can be prolonged through PEGylation. And RTA modified by PEG can avoid the take-ups of liver and spleen, at the same time accumulate in tumor tissues.
结论通过聚乙二醇的修饰，使RTA生物半衰期大大延长，且修饰后能避免肝脏、脾脏的摄取，并靶向到肿瘤组织。
CONCLUSION the biologic half-life of RTA can be prolonged through PEGylation. And RTA modified by PEG can avoid the take-ups of liver and spleen, at the same time accumulate in tumor tissues.
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