Objective To explore the effects of ultraviolet irradiation on platelet. Methods Three assays were been developed.These include platelet count,release of alpha granule membrane protein 140(GMP-140)and morphology of platelet by electron micrograph in those samples before and after ultraviolet irradiation.Results Compared with the nonirradiated controls,the irradiated units showed significant changes including decrease of platelet count,increase of release of GMP-140 and platelet lesion in morphology.Conclusion Ultraviolet irradiation may have activation and lesion effect in platelet.

Objectives: To investigate the status of chlamydia pneumonia infection in blood donors from Nanjing Command of PLA. Methods: Use the technique of nested polymerase chain reaction to detect the DNA of chlamydia pneumonia in peripheral blood mononuclear cells. Results: 32 of 100 blood donors were positive (32%). Conclusions: Our study reveals that the infection rate of chlamydia pneumonia in blood donors from Nanjing Command of PLA is considerable high and the clinical values need further research.