Abstract
Summary Electrical activity was recorded from the lumbar sympathetic chains of control rats and rats treated with an antiserum developed to the sympathetic nerve growth factor derived from mouse salivary glands. The magnitude of the potentials recorded from the nerves of the immunized animals was considerably smaller than the magnitude of discharge seen in control animals. These observations provide further evidence for the effectiveness with which the anti-nerve growth factor damages the sympathetic nervous system. Several possible explanations for the type of activity recorded from the nerves of immunized animals were considered.

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