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Muramic acid in the synovial tissue and synovial fluid at different time points after i.p. injection of the arthritogenic CW. Muramic acid was not found in the synovial tissues or fluids of the rats injected with the nonarthritogenic CW. The detection limit was 1 pg of muramic acid, giving a signal-to-noise ratio of 20 to 30. For each time point, the synovial tissues and synovial fluids were collected from five rats. Mean values plus the SEM are shown.
