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The cellular immune response to acetylcholine receptor from Torpedo electric organ was studied in 100 myasthenic patients and 41 healthy subjects. The mean stimulation index (SI) was 2 +/- 0.15 for the patients, and 1.06 +/- 0.08 for the controls. Stimulation was significantly greater when the test medium contained autologous serum rather than a standard universal serum (AB serum). Young patients were generally good responders (SI, 2.39 +/- 0.26), but older patients usually did not respond (mean SI, 1.18 +/- 0.13). Among the younger patients, men had higher responses than women (mean SI, 3.13 +/- 0.63 and 2.05 +/- 0.23, respectively). There was no correlation between degree of lymphocytic reactivity and duration or severity of symptoms.
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Conti‐Tronconi et al. (1979) studied this question.
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