Abstract
Conclusion
1. The variation of reticulocytes in normal pigeons has been determined. 2. Concentrated liver extract, injected intramuscularly, produced the usual rise in reticulocytes in normal pigeons, while Congo red, injected intravenously in the same and other pigeons for days, did not. This does not mean that Congored can not act beneficially in pernicious anemia. The difficulties of bioassaying antipernicious anemia agents in normal animals are real and not always appreciated.
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