1. Abuelo, J. G., and Moore, D. E. (1969), The human chromosome: Electronic microscopic observations on chromatin fiber organization, J. Cell Biol.41:73–90.
2. Arrighi, F. E., Hsu, T. C., Saunders, P., and Saunders, G. F. (1970), Localization of repetitive DNA in the chromosomes of Microtus agrestis by means of in situ hybridization, Chromosoma (Berl)32:224–236.
3. Bobrow, M., and Madan, K. (1973), The effects of various banding procedures on human chromosomes, studies with acridine orange, Cytogenet. Cell Genet.12:145–156.
4. Bostock, C. J., and Prescott, D. M. (1971a), Buoyant density of DNA synthesized at different stages of the S phase of mouse L cells, Exp. Cell Res.64:267–274.
5. Bostock, C. J., and Prescott, D. M. (1971b), Buoyant density of DNA synthesized at different stages of S phase in Chinese hamster cells, Exp. Cell Res.64:481–484.