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Exhibit 21
SUBSIDIARIES OF THE REGISTRANT

There is no parent of the Company. The following is a listing of the significant subsidiaries of the Company.
JURISDICTION
OF
ORGANIZATION
McKesson International Bermuda IP3A LimitedBermuda
McKesson Medical-Surgical Holdings Inc.United States
McKesson Medical-Surgical Inc.United States
McKesson Medical-Surgical Supply Chain Services LLCUnited States
McKesson Medical-Surgical Top Holdings Inc.United States
McKesson Plasma and Biologics LLCUnited States
McKesson Specialty Care Distribution LLCUnited States
McKesson UK Finance I LimitedUnited Kingdom
McKesson UK Finance II LimitedUnited Kingdom
McKesson US Finance CorporationUnited States