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瞟呤核苷酸和嘧啶核苷酸是组成细胞的主要成分，是DNA和RNA的基本组成单位，在细胞结构。代谢、能量和功能调节等方面起重要作用。核苷酸是核酸在体内的代谢产物，其中部分核苷酸又可进一步水解为核苷。核苷酸及其水解产物均可被肠粘膜吸收肠粘膜细胞可将核苷酸运输到其他细胞。
Nucleotide and pyrimidine nucleotides constitute the major components of cells and are the basic building blocks of DNA and RNA in cell structures. Metabolism, energy and functional regulation plays an important role. Nucleotides are metabolites of nucleic acids in the body, some of which can be further hydrolyzed into nucleosides. Nucleotides and their hydrolysates can be absorbed by the gut Mucosal cells can transport nucleotides to other cells.