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THE RESULTS OF THESE OBSERVATIONS MAY BE BRIEFLY SUMMARIZED AS FOLLOWS: Feeding of hematoporphyrin to white mice over long periods of time produced no apparent changes in these animals and had no effect upon their sensitivity to light. Albino and slightly pigmented mice and rats injected with hematoporphyrin were protected from the rays of the sun by(More)
  • H. Smetana
  • 2003
The facts presented suggest strongly that reticulo-endothelial cells are actively concerned in the formation of amyloid. Points in favor of this theory are as follows: 1. The appearance of amyloid in places where reticulo-endothelial cells are normally present, sometimes in very large number. 2. The formation of early amyloid in the small solitary patches,(More)
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