474 J- RUNNSTROM 



i8. Markman, B., Exp. Cell Res. 23, 118 (1961). 



19. Mercer, E. H., and Wolpert, L., Exp. Cell Res. 14, 629 (1958). 



20. Pardee, A. B., Jacob, F., and Monod, ].,jf. mol. Biol. I, 165 (1959). 



21. Runnstrom, J., "Verh. Deutsch. Zool. Ges. in Tubingen", 32 (1954). 



22. Runnstrom, J., Arkiv. Zool. 10, 523 (1957). 



23. Runnstrom, J., Exp. Cell Res. 22, 576 (1961). 



24. Runnstrom, J., Exp. Cell Res. 23, 145 (1961). 



25. Runnstrom, J., Pathologie et Biologie (in press) (1961). 



26. Runnstrom, J., Hagstrom, B., and Low, H., Exp. Cell Res. 8, 235 (1955). 



27. Runnstrom, J., Hagstrom, B. E., and Perlmann, P., in "The Cell", Vol. I, ed. 

 J. Brachet and A. E. Mirsky. Academic Press, New York, 327 (1959). 



28. Runnstrom, J., and Kriszat, G., Ark. Zool. 13, 95 (i960). 



29. Waddington, C. H., "Principles of Embryology". Allen and Unwin, London 

 (1954)- 



