Abstract
Summary
This study indicates that a vit. B12 deficiency impaired the production of circulating complement-fixing antibody. The sera of the inanition control and the ad libitum control animals possessed antibody concentrations of approximately the same titers. This was evident when either 0.0073 mg N or 0.0365 mg N was employed as the antigen. Therefore, the specific vitamin deficiency and not inanition appears to be the significant factor affecting the production of circulating complement-fixing antibody under these experimental conditions.
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