The prophage 69 



The receptor 70 



Prophage and vegetative phage 70 



Immunity 71 



Induction 71 



Inducing agents 73 



Zygotic induction 73 



Infection and lysogenization 75 



Mutations affecting inducibility 75 



Mutations affecting virulence 77 



Mutations affecting the vegetative phase 78 



Interactions of Cellular and Viral Functions 80 



Cellular control of viral reproduction 80 



Viral control of cellular functions 82 



Viral and nonviral diseases 83 



Viruses and cancer 83 



VI. BIOLOGICAL ORDER AND ENTROPY 87 



Sources of Energy 87 



Equations 88 



Entropy 89 



Life and Entropy 90 



Information and Negentropv 91 



The Negentropy of Biological Organization 92 



Remarks on "Genetic Information" 93 



Entropy and Evolution 94 



The Source of Orderliness 95 



VII. CONCLUSION 99 



