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Exhibit 21.1


Subsidiaries of Hologic*
Jurisdiction of Incorporation or Organization
Beijing Hologic Technology Co., Ltd.
China
Biotheranostics, Inc.
Delaware
Bolder Surgical Holdings, Inc.
Delaware
Bolder Surgical, LLC
Colorado
Cytyc Corporation
Delaware
Cytyc Prenatal Products Corp.
Delaware
Cytyc Surgical Products, LLC
Massachusetts
Diagenode SA
Belgium
Diagenode, LLC
Delaware
Endomagnetics GmbH
Germany
Endomagnetics Ltd.
United Kingdom
Endomagnetics SAS
France
Endomagnetics, Inc.
Delaware
Faxitron Bioptics, LLC
Delaware
Gen-Probe Incorporated
Delaware
Gen-Probe Prodesse, Inc.
Wisconsin
Gynesonics, Inc.
Delaware
Gynesonics Netherlands BV
Netherlands
Health Beacons, Inc.
Washington
Hologic (Australia & New Zealand) Pty Ltd.
Australia
Hologic Asia Pacific Limited
Hong Kong
Hologic Austria GmbH
Austria
Hologic BV
Belgium
Hologic Bermuda Holding 2 Limited
Bermuda
Hologic Bermuda Limited
Bermuda
Hologic Canada ULC
Canada
Hologic Capital Holdings, Inc.
Delaware
Hologic Denmark ApS
Denmark
Hologic Deutschland GmbH
Germany
Hologic Espana S.A.
Spain
Hologic Finance Ltd.
Bermuda



Hologic Finland Oy
Finland
Hologic France SARL
France
Hologic GGO 2, LLC
Delaware
Hologic GGO 3 LLP
United Kingdom
Hologic GGO 4 LTD
United Kingdom
Hologic Global Holding LTD
United Kingdom
Hologic Hitec-Imaging GmbH
Germany
Hologic Holdings Limited
United Kingdom
Hologic HUB LTD
United Kingdom
Hologic Iberia, S.L.
Spain
Hologic India LLP
India
Hologic International Holdings B.V.
Netherlands
Hologic IP LTD
United Kingdom
Hologic Ireland Limited
Ireland
Hologic Italia S.r.l.
Italy
Hologic Japan KK
Japan
Hologic Korea Ltd.
Korea
Hologic Latin America (Servicos Em Marketing E Negocios) Ltda.
Brazil
Hologic Ltd.
United Kingdom
Hologic Malaysia SDN. BHD.
Malaysia
Hologic Medical Technologies (Beijing) Co., Ltd.
China
Hologic Medicor Suisse GmbH
Switzerland
Hologic MENA
Saudi Arabia
Hologic Middle East, Dubai
Dubai
Hologic Netherlands B.V.
Netherlands
Hologic Nordic Holdings Oy
Finland
Hologic Portugal, Unipessoal Lda
Portugal
Hologic Sales and Service, LLC
Massachusetts
Hologic (Shanghai) Medical Device Co., Ltd.
China
Hologic (Shanghai) Medical Supplies Co., Ltd.
China
Hologic Singapore Pte. Ltd
Singapore
Hologic Suisse SA
Switzerland
Hologic Surgical Products Costa Rica, S.R.L.
Costa Rica
Hologic Sweden AB
Sweden



Hologic Swiss Group GmbH
Switzerland
Hologic Taiwan Ltd.
Taiwan
Hologic UK Finance Ltd.
United Kingdom
Hologic US Finance Co LLC
Delaware
Hologic US Holding Ltd.
Delaware
Navigation Three Limited
Hong Kong
Normedi AB
Sweden
Normedi Danmark ApS
Denmark
Normedi Finland OyAb
Finland
Normedi Norge AS
Norway
Shiji Jinbai (Shanghai) Technology Co., Ltd.
China
Somatex Medical Technologies GmbH
Germany
Suros Surgical Systems, Inc.
Delaware
TCT International Co., Ltd.
British Virgin Islands

*Subsidiaries not included in the list are omitted because, in aggregate, they are insignificant as defined by Item 601(b)(21) of Regulation S-K.