1. To study the Molecular Epidemiological characteristics of an outbreak of dermatic infection caused by M. fortuitum.

2. And the drugs will bring other complications for example most dermatic toxicity and have got a lot of defects.

3. Objective To study the new method to treat chronic dermatic ulcer to improve the effect of the treatment.

4. The results showed that the GVHD was induced successfully in 13 case, accounting for 61 8%. Their main clinic signs included arthralgia, diarrhea, dermatic maculpapule and stuffy nose.

5. The incidence of nosocomial infection was 10.9%. The main of nosocomial infection are conjunctivitis, dermatic infection, thrush.