Abstract
1Insect Biocontrol Laboratory, U. S. Department of Agriculture, Beltsville, Maryland 20705
2Vegetable Laboratory, U. S. Department of Agriculture, Beltsville, Maryland 20705
3Mycoplasma Section, Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, Frederick Cancer Research Facility, Frederick, Maryland 21702
4Laboratoire de Biologie Cellulaire et Moléculaire, Institut Nationale de Recherche Agronomique, 33883 Villenave d'Ornon Cedex, France
5Department of Anatomical Sciences, State University of New York, Stony Brook, New York 11794