1 Exhibit 10.6 AMENDED AND RESTATED STOCK PURCHASE AGREEMENT AMENDED AND RESTATED STOCK PURCHASE AGREEMENT, dated as of May 1, 1999, between BIOPURE Corporation, a Delaware corporation (the "Company"), and Geoffrey J. Filbey an individual residing at...Stock Purchase Agreement • January 29th, 2001 • Biopure Corp • Biological products, (no disgnostic substances) • Massachusetts
