Exhibit 16.1


                                                           [ANDERSEN LETTERHEAD]


Office of the Chief Accountant
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

March 22, 2002


Dear Sir/Madam:

We have read the paragraph titled "Change in Accountants" included in the
Amendment # 1 to Form S-1 of Viacell, Inc. to be filed with the Securities and
Exchange Commission and are in agreement with the statements contained therein.

Very truly yours,

/s/ Arthur Andersen LLP
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Arthur Andersen LLP

DLH

Copy To: Ms. Mary Thistle, Vice President of Finance, Viacell, Inc.