| abstract |
Analysis of hematopoietic stem cell growth regulators produced by stromal cells, creation of a cDNA library, and isolation of novel hematopoietic genes. Genes encoding the following proteins (a) or (b): (A) an amino acid sequence represented by one SEQ ID NO selected from the group consisting of SEQ ID NOs: 2, 4, 6, 8, 10 and 12; (B) a protein comprising an amino acid sequence in which one or several amino acids have been deleted, substituted or added in the amino acid sequence (a), and having hematopoietic stem cell proliferation regulating activity. |