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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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ACCESSION NUMBER:		9999999997-04-023216
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20040519
EFFECTIVENESS DATE:		20040519

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSKARYOTIC THERAPIES INC
		CENTRAL INDEX KEY:			0000885259
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				043027191
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

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		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21481
		FILM NUMBER:		04029813

	BUSINESS ADDRESS:	
		STREET 1:		195 ALBANY ST
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		6173490200
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