Mental pressure and the relation early of tumor and certain disease caused the attention of researcher, but the research report that still has no mental pressure and skin tumour dependency up to now. The characteristic of this research has:

1) unlike before the experiment gives the mental pressure that is at experiment mice person stimulation in that way, if swim to wait in electrical shock or glacial water, imitate real life condition as far as possible however, let mice smell the odour of the vulpine make water that never has contacted

2) replaced the method that gives cell of mice inject tumour revulsive cancer, give radial illuminate to cause skin cancer.

The female H-1-hrBr mice with 80 6 week big age is getting used to a lab 2 week hind divide the environment to be mixed for experimental group randomly contrast group, every groups 40, room of cent basket cent is raised. Daily the taste that gives fox of experimental group bandicoot make water is exciting and successive 14 days. 2 week hind stimulate frequency to decrease for every week 3, give the light illuminate at the same time (every week 3, all at noon undertakes) , illuminate dosage comes from original 32.4mJ/cm2 step up 288mJ/cm2. Contrast group of light illuminate that give same dose only. Result discovery, experimental group bandicoot is in the 8th week to appear namely the skin tumour related radial illuminate, and contrast group should be in the 21st week to just appear similar tumor show. Data still makes clear, be in the 21st week of the experiment, the experimental group bandicoot of 35% produces the tumor of a place, and in contrast it is in the group 7% , former want than latter 5 times taller.

Researcher points out, not all should stimulate exciting metropolis to cause undesirable consequence. Acute should be stimulated have the effect that enhances airframe immunity power, but stimulation of chronic spirit pressure can pass a variety of ways to change function of cutaneous protective screen, affect the heal ability of airframe skin cut.

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(The exercitation edits: Huang Xilin)