[Antigenicity and resorptive behavior of the usual gelatin preparations and of dry fibrin foam].

Immunofluorescence studies of Gelastypt, Gelfoam, and Fibrospum showed species-specific, protein-dependent antigen characteristics. Additional experimental studies using guinea pigs revealed that, after subcutaneous implantation, these materials do not lose their antigen characteristics during the resorptive process. Remnants of subcutaneously implanted material could be demonstrated intracellularly (macrophages) in the spleens of the experimental animals four weeks later.