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Science 15 November 1991:
Vol. 254. no. 5034, p. 920
DOI: 10.1126/science.254.5034.920-a
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Clarification

In the cover caption for the issue of 6 September (p. 1069), the magnification for the image of the mite Proctlaelaps regalis was approximately 400 times its actual body size (actual length was about 500 micrometers).

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Science. ISSN 0036-8075 (print), 1095-9203 (online)