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Lazy leucocyte syndrome--disorder of the granulocyte membrane?
  1. P H Pinkerton,
  2. J B Robinson,
  3. J S Senn

    Abstract

    An adult with long-standing neutropenia had the functional granulocyte abnormalities typical of the lazy leucocyte syndrome. Scanning electron microscopy of the patient's neutrophils showed alteration in the surface configuration of the cell with coarsening of the normal fine ruffles and the appearance of knob-like projections. Similar functional and anatomical changes were induced in normal neutrophils by treatment with vinblastine. The lazy leucocyte syndrome may be a consequence of altered membrane microfilamentous protein structure or function, and undue rigidity of the affected neutrophils may explain the clinicopathological features of the disease.

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