1. Pollen abortion occurs at the uninuclear stage of PMC's.

2. After uninuclear pollen grain forms, the growing speed of the pollen grain of oblong anthers and of globose anthers roughlg corresponds to each other.

3. Performance for island of langerhans around lymphocyte and uninuclear cell infiltration, moreover may display to thrust out the island atrophy and the cell vacuole denaturation.

4. The big , empty and abortive pollen grains are abserred at the stage of uninuclear microspore.

5. A. Strengthened the phagocytic count percentage of the single nucleus macrophage and the uninuclear cell, the macrophage to antigen recognition processing, transmission ability.