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VI Autologous Bone Marrow Transplantation.pdf - Blog Science ...

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in TC 19 medium (Flobio), with an haematocrit of about5 %. Adapted ASTA Z<br />

doses corresponded to the LD95. Treatment lasted for 30 min at 37°C and bone<br />

marrow was washed twice before freezing.<br />

Immunological Purging (12)<br />

Samples were treated with cocktails of two pan B monoclonal antibodies<br />

(MoAb) either RFB 7(IgM isotype, 1/250 final dilution from G. JANOSSY, CD20)<br />

and Y2955 (IgG isotype, 1/200 final dilution from Hoffman Laroche, CD19) or<br />

RFB 7+ SB 4from Sanofi (IgM isotype, 1/50 final dilution, CD19). Samples were<br />

incubated 20 minutes with MoAbs and then twice with baby rabbit complement<br />

(from Institut Pasteur), with one wash between complement treatments.<br />

Complement was used at 1 /3 final dilution and D Nase 1 (pancreatic DNase,<br />

sterile, non pyrogenic, from Sigma CC, Saint Louis, USA) 5 units/ml was added<br />

to each complement treatment.<br />

STUDY DEFINITIONS AND STATISTICS<br />

Complete remission (CR) was defined as the tumour disappearance according<br />

to all indexes. PR was defined as reduction of measurable lesions of at least<br />

50 % without the appearance of new lesions. Event free survival was calculated<br />

from the day of transplantation, using the Kaplan and Meier method

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