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Previous Volume 329:1821 December 9, 1993 Number 24 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Thibault, in the Clinical Problem-Solving case "One More Hypothesis" (July 1 issue),¹ interprets a white-cell count of 26,900 with a differential count of 91 percent neutrophils, 6 percent lymphocytes, 2 percent monocytes, and 1 percent band forms as indicating a "left shift."

"Left shift" refers to "the presence of bands, metamyelocytes, and sometimes myelocytes in the blood"². "Right shift" and "left shift" are currently used to describe opposite directions in myeloid maturation. For example, the rare hematologic disorder of myelokathexis involves bone marrow retention of myeloid elements with a "shift to the right in the myeloid . . . [Full Text of this Article]

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• Wadler, S., Schwartz, E. L. (1997). New Advances in Interferon Therapy of Cancer. The Oncologist 2: 254-267 [Abstract] [Full Text]