1.14 cases were transglottic carcinoma showing extension of mass across ventriculus larynges, narrowing cavity anterior to throat, and damaging cricoid cartilage and spooncartilage.
2.It is indicated that chimozine is relative to the forming of peritrophic membrane (PMb) and the den-sity of PMb determined whether Nosema Apis Zander can inject in the ventriculus epithelium.