发生生物学

OBJECTIVEO To study the changing of bulbus medullae SP and 5-HT when rats were disposed by different medicine that can make people vomit and provide experimental basis for detecting the pathological mechanism of reverse ascending of Stomach—Qi.

目的：通过对大鼠给与不同致呕吐物质的刺激，研究大鼠在接受不同呕吐物质刺激后其延髓组织P物质及5-羟色胺(5-HT)的变化，为中医学&呕吐&证发生的病理病机&胃气上逆&的理论，提供分子生物学依据。

The findings suggest that expression of HLA-G in tumors may be a wides pread phenomenon in tumor biology and this may permit tumors to escape from host immunosurveillance.

结果提示，HLA-G表达可能是肿瘤生物学中的普遍现象，生殖系统癌细胞在发生和发展过程中其基因表达有可能出现反分化现象，开始表达HLA-G，从而使癌细胞产生免疫耐受，逃逸宿主的免疫监视。

The results were near to normal level in the tissue at the area of ＞5 mm away from the cancer. Conclusion: In head and neck squamous cell carcinoma, MAGE1 and MAGE3 protein have a higher expression rate, and the results show higher correlation between them.

MAGEA1及MAGEA3蛋白在头颈部鳞癌中有较高的表达率，并与头颈部鳞癌的发生、发展中有一定的相关性，可以作为判断头颈部鳞癌发展生物学特性的参考指标。

The studies biological characteristics of Pestalotia funerea and its pathogenic toxin have important theoretical and practical significances to further explore pathogenic mechanism of this fungus,the occurrence and epidemical law and control method of pine needle blight.

开展枯斑盘多毛孢菌生物学特性及致病毒素的研究对深入探索松赤枯病的发生发展规律、发病机理、防治方法有重要的理论和实践意义。

Ultrasound may make reversible trauma on tissue by its biological effect, increase tiny crack and permeability of plasma membrane, enhance production and secretion of bFGF, promote growth of local microvessel, improve nutrition of microvessel and nerve ending.

通过超声的生物学效应可使组织发生可逆性损伤，细胞膜微小破裂增加，细胞膜通透性提高，同时细胞bFGF产生增加，最后bFGF分泌增加，促进局部微血管的形成，改善微血管和神经末梢的营养状况。

How does lactose bring about the induction of synthesis of β-galactosidase, permease, and transacetylase Why does this event not occur when glucose is also in the medium

乳糖如何诱导β-半乳糖苷酶、透过酶、转乙酰基酶合成的？为什么在葡萄糖存在的情况下，这一生物学事件不能发生？

The research for tumorigencity of MDV infection is of great significance on comparison biology as MD model for oncogenic herpesviruses.

深入研究MDV及其致MD肿瘤的发生机制，在比较医学上具有广泛的生物学意义。

Abstract］ objective to investigate anus sphincter preserved surgical method and indication for low rectal cancer.methods 15 cases with low rectal cancer were operated with eversion and pull-through anus preserved colorectal anastomosis through anus.results no patients died of operation,no patients was with fistula and stricture of anastomosis,no defecation incontinence happened after postoperative 20 weeks,only one patient was with local recurrence.following up for 8 months to 5 years,5 cases were with distant metastasis,4 of these died,one of these had lived with liver metastasis for 3 years.conclusion the indication of anus preserved operation should be chosen according to clinical stage and biological characteristic of rectal malignancy; eversion and pull-through anus preserved colorectal anastomosis through anus is a better anus preserved operation for low rectal cancer.

目的 探讨低位直肠癌保留肛门括约肌功能的手术方法和手术适应证。方法对低位直肠癌经腹经肛门直结肠外翻拉出保留肛门吻合术15例。结果全组无手术死亡，未发生吻合口漏和吻合口狭窄，局部复发1例，20周左右恢复正常排便排气功能，无大便失禁病例。随访8个月～5年，5例为远处转移，死亡4例，其中1例肝转移3年仍生存。结论根据直肠癌的临床分期和肿瘤的生物学特性选择保肛手术适应证，经腹、肛门齿线上直肠癌根治性切除，行肛门直结肠外翻拉出吻合是低位直肠癌较好的保肛术式。

Re-expression of TFF2 in gastric epithelial dysplasia implies that TFF2 possibly contributes to the initiation of gastric carcinoma.

TFF1、TFF2蛋白表达在胃癌发生过程中进行性下调，TFF1、TFF2蛋白表达可作为胃癌生物学行为的客观指标。

The high expression of DAF may involve in the immune escape of cancerous cells, so its biological effects are important for carcinogenesis and development of human cervical ovarian cancer.

DAF在宫颈癌细胞中的高表达可能是肿瘤细胞免疫逃逸的重要机制，对宫颈癌的发生发展有重要的生物学意义。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。