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Representative original polygraph tracings of chicken biventer cervicis nerve-muscle preparation (in Krebs-Henseleit solution aerated with 95% O2/5% CO2) in response to electrical stimulation of fast twitch fibers and contraction to exogenous acetylcholine (slow muscle fibers) in the presence (after) and absence (before) of pooled immunoglobulin fraction (21 days after PSP administration). This suggests that these serum immunoglobulins may alter neuromuscular function.
