il. Anderson, W.F., Stegcles, A., Wilson, G., Kantor, J., Velez, R., Picciano, D.J., Falvey, A., and Nienhuis, A., Cellfree transcription of human bone marrow chromatin, Ann. N.Y. Acad. Scr. 241: 262-273, 1974. 12. Falvey, A.K., Kantor, J.A., Robert-Guroff, M.G., Picciano, D.J., Weiss, G.B., Vavich, J.M., and Anderson, W.F., Mechanism of action of ribonucleic acid-directed deoxyribonucleic acid polymerase I. Transcription of globin messenger ribonucleic acid, J. 13. Biol. Chem. 249: 7049-7056, Deisseroth,A., Burk, R., Picciano, D., Minna, J., Anderson, W.F., and Nienhuis, A., Hemoglobin synthesis in somatic cell hybrids: Globin gene expression in hybrids between mouse erythroleukemia and human marrow cells or fibroblasts, Proc. Nat. Acad. 14. 1974. Scr. USA 72: 1102-1106, 1975. Velez, R., Kantor, J.A., Picciano, D.J., Anderson, W.F., and Nienhuis, A.W., Alpha- and beta-globin complementary deoxyribonucleic acids of human and rabbit. Specificity of hybridization, J. Biol. Chem. 250: 3193-3198, 1975. 15. Kilian, D.J., Picciano, D.J., and Jacobson, C.B., Industrial monitoring: A cytogenetic approach, Ann. N.Y. Acad. Sci. 269: 4-11, 1975. 16. Kilian, D.J. and Picciano, D., Cytogenetic surveillance of industrial populations, in Chemical Mutagens. Vol. 4, editor A. Hollaender, Plenem Press, N.Y., pp. 321-339, 1976. 17. McKinnell, R.G., Pieciano, D.J., and Krieg, R.D., Fertilization and development of frog eggs after repeated spermiation induced by human chorionic gonadotropin, Lab. Animal Sci. 26: 18. 932-935, 1976. Picciano, D.J. and McKinnell, R.G., A short-term culture method for the preparation of chromosome spreads from Rena pipiens, Stain Technology 52: 101-103, 1977. 19. Picciano, D. and Kilian, D.J., A semi-automated cytogenetic analysis system, Exp. Cell Res. 107: 431-434, 1977. 20. Picciano, D.J., Flake, R.E., Gay, P.C., and Kilian, D.J., Vinyl chloride cytogenetics, J. Occupational Med. 19: 527530, 1977. 21. Kilian, D.J. and Picciano, D.J., Monitoring for chromosomal Gamage in exposed industrial populations, in Genetic Damage in Man Caused by Environmental Agents, editor K. Berg, Academic Press, N.Y., pp. 105-115, 1979. 22. Picciano, D., Cytogenetic study of workers exposed to benzene, Environmental Research 19: 33-38, 1979.