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Document and Entity Information	6 Months Ended
	Jun. 30, 2011
Document Information [Line Items]
Document Type	S-4
Amendment Flag	false
Document Period End Date	Jun. 30, 2011
Trading Symbol	NBS
Entity Registrant Name	NEOSTEM, INC.
Entity Central Index Key	0000320017
Entity Filer Category	Smaller Reporting Company

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