Abstract
Injection of ovalbumin into subcutaneous air pouches prepared on the backs of rats previously sensitised to the antigen resulted in the induction of a small and transient accumulation of inflammatory fluid with a predominantly polymorph cell infiltrate. Challenge of pouches of appropriately sensitised rats with Bordetella pertussis vaccine, on the other hand, resulted in a larger and more prolonged accumulation of fluid and cells with a predominantly mononuclear presence. When intact homologous femoral head cartilage was implanted in these inflamed pouches proteoglycan loss was found to be not different from similar implants in non-inflamed pouches. Coating the cartilage with human heat-aggregated immunoglobulin G prior to implantation in air pouches was also found to be without effect on subsequent proteoglycan loss.
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