Patent ID: 9180207
Filing Date: 2015-11-10
Classification: A01K,A61K,G01N

Abstract:
1. A transgenic mouse developing anemia after birth by genetic modification, wherein the genetic modification comprises: (a) a homozygous knockout of an endogenous erythropoietin (Epo) gene in the genome of the mouse; and (b) introduction of an extraneous Epo gene, in a chromosome of the mouse, as a transgene, the transgene being a region from 3.3-kb upstream to 4.5-kb downstream of a transcription start site of the Epo gene, wherein: the mouse is hemizygous or homozygous for the extraneous Epo gene; expression of the extraneous Epo gene rescues the mouse from lethality by a shortage of Epo or anemia associated therewith before birth; expression of the extraneous Epo gene in the kidney is suppressed after birth; and the mouse was generated from a fertilized egg deposited under accession number FERM BP-11347.