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| Subsidiaries of Hologic | | Jurisdiction of Incorporation or Organization |
| Acessa Health Inc. | | Delaware |
| Beijing Hologic Technology Co., Ltd. | | China |
| Benassar Diagnostica-Equipamientos Medicos Unipessoal, Lda. | | Portugal |
| BioLucent, LLC | | Delaware |
| Bioptics, Inc. | | Arizona |
| Cytyc Cayman Limited | | Cayman Islands |
| Cytyc Corporation | | Delaware |
| Cytyc Prenatal Products Corp. | | Delaware |
| Cytyc Surgical Products, LLC | | Massachusetts |
| Direct Radiography Corp. | | Delaware |
| Emsor, Sociedad de responsabilidad limitada | | Spain |
| Faxitron Bioptics, LLC | | Delaware |
| Focal Therapeutics, Inc. | | Delaware |
| Gen-Probe Incorporated | | Delaware |
| Gen-Probe Prodesse, Inc. | | Wisconsin |
| Gen-Probe Sales & Service, Inc. | | Delaware |
| Health Beacons, Inc. | | Washington |
| Hologic (Australia & New Zealand) Pty Ltd. | | Australia |
| Hologic (MA), LLC | | Massachusetts |
| Hologic ASE, LLC | | Delaware |
| Hologic Asia, Limited | | Hong Kong |
| Hologic Asia Pacific Limited | | Hong Kong |
| Hologic Austria GmbH | | Austria |
| Hologic BV | | Belgium |
| Hologic Canada ULC | | Canada |
| Hologic Caribbean (Barbados) SRL | | Barbados |
| Hologic Denmark ApS | | Denmark |
| Hologic Deutschland GmbH | | Germany |
| Hologic Espana S.A. | | Spain |
| Hologic Europe Middle East and Africa, S.A. | | Switzerland |
| Hologic Finance Ltd. | | Bermuda |
| 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 |