Methods:Bioinformatics and free open data-set such as GeneBank, SAGE, GeneCard, GEO, InterPro, ProtoNet, UniProt and BLOCKS were used to analyze the expression series of ID4 mRNA and ID4 protein.

• 方法:采用生物信息学方法,利用开放性的数据库包括Gene expression omnibus(GEO)、Affymetrix基因芯片表达数据库、人类基因组数据库(GeneBank)、基因表达数据库SAGE、GeneCard、InterPro、ProtoNet、UniProt和BLOCKS。