Paul S. Moorhead

Absence of damage to human chromosomes by spray adhesives.

Summary Examination of metaphase chromosomes of cultured leukocytes from six individuals exposed in some degree to spray adhesives compared to II control subjects showed no significant elevations of aberration frequencies. No consistent increase in abnormal chromosome numbers nor in incidence of true breaks, achromatic gaps, or other structural aberrations was revealed by pooling of data obtained. Incidental to the lack of any effect upon human chromosomes due to use of spray adhesives, the following indicates the absence of any relation to birth anomalies. A dysmorphic chromosoinally abnormal child was born to control parents in the study and a stillborn fetus with no congenital anomalies was spontaneously aborted by a subject whose husband had been exposed to spray adhesives.

Twenty-Eighth Annual Meeting of the Tissue Culture Association

Presidents Welcome--EDWIN H. L ENNETTE Joseph F. Morgan: The Man and His Contributions. H. J. MORTON, Dept. Health and Weffare, Ottawa, Canada. Development of Improved Media for Normal Diploid Cells. R. G. HAM and W. L. McKeeban, University of Colorado, Boulder, Colorado Hormonal Growth Control of Cells in Culture. I. HAYASHI, S. Hutchings, J. Mather, J. Larner, G. Sato, University of California, San Diego, California. Coffee Break Hormonal Regulation of Differentiation in Plant Cells. T. L. SHININGER, The University of Utah, Salt Lake City, Utah. A Tissue Culture Analysis of the Steps in Limb Chondrogenesis. M. SOLURSH, University of Iowa, Iowa City, Iowa.