Abstract
A boy with recurrent pyogenic infection was found to have occasional neutropenia, defective neutrophil chemotaxis, hypogammaglobulinemia with increased IgM, and impaired cellular immunity. The T and B lymphocytes were defective in IgG production in vitro. Ultrastructure of the neutrophils was normal. The marrow cells formed normal numbers of granulocytic colonies in culture, but the colonies were apparently small in size. The levels of colony-stimulating activity were normal. The lymphocytes did not impair granulopoiesis of control marrow cells. These data indicate that the neutropenia and defective neutrophil chemotaxis are due to the intrinsic neutrophil defects and are not secondary to T and/or B lymphocyte dysfunctions in the patient.
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