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That exposure to direct sunlight produces or intensifies the erythematous eruptions on the exposed parts of the bodies of pellagrins is an opinion of many observers; the underlying cause of this apparent photo-sensitization is, however, entirely obscure. The auto-experiment of Meyer-Betz with hematoporphyrin and the skin manifestations of hydroa aestivalis, buck wheat disease and other forms of apparent sensitization among the lower animals at least justify the suspicion that some toxic substance is circulating in the blood stream. With the object of determining whether or not the spectrum of pellagrous serum differed materially from that of non-pellagrous, a series of
Spectographic Examination of Pellagrin's Sera.. Ann Intern Med. 1929;3:626. doi: https://doi.org/10.7326/0003-4819-3-6-626_1
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© 2019
Published: Ann Intern Med. 1929;3(6):626.
DOI: 10.7326/0003-4819-3-6-626_1
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