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Borrelia vincentii is usually considered to be present in small numbers as a part of the indigenous flora of the human mouth. When associated with the mixed flora of Vincent's infection or other inflammatory processes, however, its numbers are markedly increased. It has been noted in these laboratories also, that when pure cultures were contaminated with(More)
Previous studies (I) have shown that variations in the chemical and biological species occurred both laterally and vertically in a segment of the Indian River in Brevard County. These studies also indicated that variations occurred longitudinally; however, the initial choice of observation sites were such that longitudinal variations were minimized. An(More)
R. H. JONES, T. A. NEVIN, W. J. GUEST, AND L. C. LOGAN From the Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan 48104, and the Venereal Disease Research Laboratory, Venereal Disease Program, National Communicable Disease Center, Bureau of Disease Prevention and Environmental Control, Public Health Service,(More)