1. Alberts, B. M.: Function of gene 32-protein, a new protein essential for the genetic recombination and replication of T4 bacteriophage DNA. Fed. Proc. 29, 1154– 1163 (1970).
2. Alberts, B. M., Frey, L.: T 4 bacteriophage gene 32: a structural protein in the replication and recombination of DNA. Nature (Lond.) 227, 1313–1318 (1970).
3. Bird, R., Lark, K. G.: Initiation and termination of DNA replication after amino- acid starvation of E. coli 15 T-. Cold Spr. Harb. Symp. quant. Biol. 33, 799–808 (1968).
4. Bleecken, S., Strohbach, G., Sarfert, E.: Autoradiography of bacterial chromosomes. Z. allg. Mikrobiol. 6, 121–123 (1966).
5. Bode, H. R., Morowitz, H. J.: Size and structure of the Mycoplasma hominis H 39 chromosome. J. molec. Biol. 23, 191–199 (1967).