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Paraffin sections stained with hematoxylin of empty capsules implanted into the peritoneal cavity of Lewis rats and removed after for 2 weeks. (A) 1.9% (w/v) alginate; (B) 70% (w/v) PFC emulsion with 0.63% (w/v) alginate, (C) 70% (w/v) PFC emulsion with 0.63% (w/v) alginate coated with alginate, and (D) 70% (w/v) PFC emulsion with 0.63% (w/v) alginate coated with poly-L-lysine and alginate. In all cases, SLM100 alginate was used.
