The physiology of animal stress is based on cell stress, therefore, the mechanism of cell stress should belong to partly theory basis of animal stress ,and the mechanism to nuclear signal transduction of cells is an important part in theory of cell stress.In this paper,it summarized the mechanism of bioactive molecules such as Nur77, NF-κB, HSP70, RIP3 and so on ,which is in and out of nuclear in stress cell at the molecular level in this paper.As stated before ,the conjecture on the partly mechanism to nuclear signal transduction of cells is ...