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Five monoclonal antibodies (L15, L20, L23, L34, and L61) against human recombinant interleukin-2 were tested for their effects on the interleukin-2 bioactivity and binding. Four of these monoclonal antibodies, L15, L20, L34, and L61, which had neutralizing activity, completely blocked interleukin-2 binding to the high-affinity receptor. On the other hand, L23, which had a very weak neutralizing activity,...
Cross-linking of radioiodinated interleukin-2 to murine CTLL-2 cells enabled detection of 70 kDa, 85 kDa and 105 kDa complexes of IL-2 and its binding proteins under the high-affinity binding condition. A series of anti-interleukin-2 monoclonal antibodies (L15, L20, L23, L34, and L61) were tested for their activity to immunoprecipitate these cross-linked complexes. L61, which had strong neutralizing...
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