Now, pathogenesis of pine wood nematode wasn't clear, maybe the esophagealglands play an important role in the process of pathogen.
目前松材线虫的致病机理尚不明确，其食道腺可能在致病过程中起重要作用。
2
The essay introduced the progress on the structure of esophagealglands of plant nematode and in its changes during the onset of parasitism, also in the components of secretions.
报道了植物线虫食道腺的结构，在生活史中的变化及其分泌物成分的研究进展。
3
This is normal esophageal squamous mucosa at the left, with underlying submucosa containing mucus glands and a duct surrounded by lymphoid tissue. The muscularis is at the right.