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In the Original Contribution, "Thrombotic Thrombocytopenic Purpura: A Ten-Year Survey," published in the Nov 5 issue (226:644-647,1973), the two parts of the Figure were reversed.
The legend on page 645 should read: "Gingival biopsy specimens. Left, High-power (×500) view showing subepithelial arteriole with characteristic histological changes of thrombotic thrombocytopenic purpura (hematoxylin-eosin). Below, Low power (×40) view showing overall gingival architecture; epithelial surface appears at top."
Legend in Error. JAMA. 1974;227(6):627. doi:10.1001/jama.1974.03230190019004
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