Postprint version. Published in Modern Bioelectricity, January 1, 1988, pages 19-34.
NOTE: At the time of publication, the author Richard B. Frankel was not yet affiliated with Cal Poly.
1988 Taylor & Francis.
This is an electronic version of an article published in Modern Bioelectricity. The definitive version is available at http://www.taylorandfrancis.com.