4、letiontypewasAZFc.19.35%(6/31)ofmicrodeletionsweredetectedin31azoospermia,andmicrodeletiontypeswereAZFb+AZFc,AZFbandAZFc.Microdeletionswerenotdetectedin20normospermicmen.Conclusion:Ychromosomemicrodeletionisoneofthecauseswhichresultinmalespermatogeneticobstacle. K