Thirty patients with active rheumatoid arthritis were transfused with chromium‐51 labeled erythrocytes from either normal or rheumatoid donors. Three sets of identical twins discordant for rheumatoid arthritis had a cross transfusion from a healthy donor to the affected recipient. In no instance was there any significant shortening of erythrocyte survival which could not be attributed to minor blood group incompatibility. The presence of rheumatoid factor in either the donor, the recipient, or both did not effect erythrocyte survival.
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Mongan et al. (1964) studied this question.
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