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Filing metadata

Accession number: 0001179110-13-007534
Form type: Form 4
Filer: IMMUNOGEN INC
CIK: CIK 855654
Filed: May 02, 2013
Reporting period: May 01, 2013
Description: Insider transaction

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0001179110-13-007534-index.htm

Complete submission

0001179110-13-007534.txt

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