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Armand F. Miranda, PhD; Sara Shanske, PhD; Arthur P. Hays, MD; Salvatore DiMauro, MD

Arch Neurol. 1985;42(4):371-373.

Abstract
• Muscle cultures from patients with infantile and later-onset acid maltase deficiency (AMD) and from unaffected controls were studied immunocytochemically with anti-acid maltase (anti-AM) antibodies and fluorescein-labeled goat anti-rabbit IgG second antibody. In control muscle cells, an intense granular distribution of staining was seen, consistent with lysosomal localization of AM. Cultured muscle cells from two patients with infantile AMD (Pompe's disease) did not fluoresce, whereas cells from two patients with AMD of later onset did fluoresce, showing a distribution similar to that of controls.

Author Affiliations
From the Departments of Pathology (Drs Miranda and Hays) and Neurology (Drs Shanske and DiMauro), Columbia University, H. Houston Merritt Clinical Research Center for Muscular Dystrophy and Related Diseases, New York.

Footnotes
Accepted for publication April 9, 1984.

Reprint requests to Department of Pathology, Columbia University College of Physicians and Surgeons, 630 W 168th St, New York, NY 10032 (Dr Miranda).

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