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Cytotoxic agents comprising maytansinoids and their therapeutic use

  • US 5,208,020 A
  • Filed: 07/13/1992
  • Issued: 05/04/1993
  • Est. Priority Date: 10/25/1989
  • Status: Expired due to Term
First Claim
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1. A cytotoxic agent comprising one or more maytansinoids linked to a monoclonal antibody or fragment thereof via a disulfide bridge at the C-3, -14, -15, or -20 position of said maytansinoids and wherein said monoclonal antibody or fragment thereof is selective for tumor cell antigens.

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