Major differences in metabolism between urban system and natural system are compared and studied.

对比研究了城市系统与自然生态系统物质代谢的主要差别.

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Conclusion The RPE cells can effectively ingest negatively charged macromolecules, possibly by scavenger receptor mediated endocytosis.

受体介导的RPE细胞的内吞作用可能是ipm内大分子物质代谢的重要机制.

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Objectives : To investigate cross - sectional and prospective associations between key components of one - carbon metabolism and late - life depression.

目的: 研究单碳物质代谢的核心成分与老年抑郁症的横向和纵向相关性.

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To the material metabolism, the digesting system influence all has the positive promoter action.

对物质代谢 、 消化系统的影响都具有积极的促进作用.

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It can promote the body material metabolism, is very advantageous in the child grows the growth.

它能促进人体物质代谢, 十分有利于儿童生长发育.

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The human fetal liver is a source of hematopoietic a nd immune s tem c ells.

表明肝脏可能是血气发生之所,而现代研究发现4～6月孕龄人胎肝不仅担负着物质代谢、蛋白质分泌等部分成熟肝脏的功能,还是胚胎重要的造血器官,造血、免疫系统干祖细胞的主要来源.

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