罗氏沼虾雄性生殖系统的组织化学研究

本研究用组织化学方法研究了罗氏沼虾雄性生殖系统中主要生物大分子的分布及变化，并探讨其原因。从精原细胞到精子的发育过程中，ＤＮＡ含量变化不大，只是随细胞核从细胞的中部转到成熟精子的主体部。ＲＮＡ的浓度略有降低，蛋白质的含量也有下降，但精氨酸逐渐生成。在成熟精子主体部前端和棘状部有少量ＰＡＳ阳性物质，这与前人的研究有很大的不同。输精管和射精管内分泌物呈ＰＡＳ强阳性，ＨｇＢｐＢ反应也呈强阳性，证明含有大量糖类和蛋白质，这种环境对精子的生理成熟和维持活力可能有十分重要的意义。     

硒中毒奶山羊组织化学检查与病理变化研究

采用Ｄａｎｓｃｈｅｒ氏组织学技术测定了口服不同剂量亚硒酸钠中毒奶山羊的心脏、肝脏、脾脏、肺脏、肾脏和大脑硒含量与分布状态；探讨了各组织器官局部病变程度与硒分布密度之间的内在联系。结果表明，中毒羊各组织器官，尤其是发生病理变化的局部组织均蓄积不同密度的反应产物；各组织局部病变程度与硒的分布密度有关，Ｄａｎｓｃｈｅｒ组织化学技术将组织硒含量与病理变化程度联系起来，为研究动物中毒病的一个实用手段。     

家蚕食道下腺组织化学和分泌颗粒去向的探讨

本试验采用组织化学方法和聚丙烯酰胺凝胶圆盘电泳,分析了家蚕食道下腺细胞RNA的变化,以及分泌颗粒的化学性质和分泌去向。试验表明,龄初时细胞中RNA含量极低,至催眠期,细胞中RNA明显增多。分泌颗粒对Millon试剂和酸性快绿均呈阳性反应。而电泳结果表明,食道下腺分泌3种蛋白,脂肪体分泌6种蛋白,从迁移率角度分析,这9种蛋白分别和血液中的蛋白十分相似。     

禽脑脊髓炎免疫细胞类别和数量变化的分析

本研究用ＡＥＶ－ＮＨ９３７株分别给１日龄雏鸡口服感染和脑内接种，并在感染后的不同阶段采血、剖检，进行琼扩试验和病理组织学观察（Ｈ．Ｅ．染色、胶质细胞染色、ＲＮＡ显色、ＡＮＡＥ显色），结果表明：ＡＥＶ经不同途径感染均引起了典型的非化脓性脑脊髓炎，血清琼扩反应阳性，各免疫器官和中枢神经小血管周围均见ＲＮＡ阳性细胞（主要是前浆细胞和浆细胞）明显增多。感染后机体出现了活跃而持续的体液免疫应答；同时也见ＡＮＡＥ阳性细胞（主要是巨噬细胞）增多。     

持续发展与生态农业研究进展

持续发展是当今世界共同关注的热点问题，农业的可持续发展在不同的国家有不同的策略。本文从持续发展思想的形成，持续发展与生态农业的关系，及生态农业作为我国一种有效的持续发展模式等几个方面，简要介绍了这一领域的研究进展     

黄花草木樨花内蜜腺的形态解剖学研究

黄花草木樨的花内蜜腺位于九枚联合雄蕊的花丝基部，并向下延伸到整个花托表层，属于环状花托／雄蕊蜜腺。蜜腺由分泌表皮和产蜜组织组成。分泌表皮上分布着许多呈张开状态的气孔器．蜜汁最终通过气孔泌出植物体外。组织化学试验表明，蜜腺组织细胞内的淀粉粒是蜜汁的主要物质来源之一。     

大眼鳜垂体的组织学和组织化学研究

[目的]探讨大眼鳜垂体的组织学结构。[方法]以大眼鳜成鱼为试验材料,通过显微镜观察对其垂体的组织学、组织化学进行研究。[结果]大眼鳜垂体由神经垂体和腺垂体两部分组成,腺垂体分为前外侧部、中外侧部和中间部。神经垂体十分发达,尤其是后腺垂体神经部,占垂体后部大部分区域;腺垂体可分辨出7种分泌细胞类型,即前外侧部的催乳激素细胞和促肾上腺皮质激素细胞,中外侧部的生长激素细胞、促性腺激素细胞和促甲状腺激素细胞,中间部的促黑色素细胞刺激激素细胞和PAS阳性细胞;中间部后方腹面边缘微血管十分发达。[结论]该研究为进一步弄清大眼鳜的繁殖机理提供了科学依据。     

Glycoconjugate histochemistry in the small and large intestine of normal and Solanum glaucophyllum-intoxicated rabbits

Vitamin D participates in mineral homeostasis, immunomodulation, cell growth and differentiation. The leaves of Solanum glaucophyllum contain high levels of 1,25-dihydroxyvitamin D3 as glycoside derivatives and their chronic ingestion generates a hypervitaminosis D-like state. We analyzed changes on carbohydrate expression as a cell differentiation indicator on samples of the small and large intestine of S. glaucophyllum-intoxicated rabbits, using conventional and lectin histochemistry. Male New Zealand white rabbits were intoxicated with S. glaucophyllum during two or four weeks and killed the day after. A group of animals (“possibly recovered group”) were intoxicated during 15 days and killed at day 45 of the beginning of the experiment. We found changes in the lectin binding pattern in the small and large intestine of the intoxicated rabbits. Some of these changes were reverted in the possibly recovered group. Vitamin D could be a new regulator factor of the intestinal glycosylation process.     

The structural and histochemical analyses and chemical characters of the cuticle and epidermal walls of cotyledon in ungerminated seeds of <Emphasis Type="Italic">Zostera marina</Emphasis> L.

How Zostera marina L. adapts to environmental stresses is of major interest to researchers wanting to obtain a better understanding of how to preserve this ecologically important seagrass. We have examined the structure and chemical properties of the cuticle and epidermal walls of Z. marina cotyledons at the pre-germination stage by microscopy, histochemistry, and chemical analyses. The epidermal cells, which have a smooth plasma membrane and slight wall-ingrowth, are surrounded by thickened outer tangential walls consisting of cellulose and pectic substances. The thick cuticle layer covers the outer surface of the outer tangential walls; the former were observed here to be much thicker than has been reported earlier for the leaves and sheaths of Z. marina. Chemical analysis of the isolated cuticle by attenuated total reflectance–infrared Fourier transform spectrometry and gas chromatography–mass spectrometry detected C₁₆ and C₁₈ fatty acids, ω-hydroxy fatty acids and β-sitosterol as components of the wax and cutin. The outermost cuticle layer was also observed to be covered with a slimy layer consisting of some polysaccharides. These results suggest that the extremely thick cuticle and slimy layer could play a significant role in protecting the cotyledons from environmental stresses at the pre-emergence stage and just after emergence.     

精子膜抗原SA-30免疫对小鼠子宫内肥大细胞的影响

用牛精子膜抗原SA 30免疫雌性昆明系小鼠 ,取小鼠子宫做常规石蜡切片 ,甲苯胺蓝染色检测子宫内的肥大细胞。结果表明 ,所有肥大细胞均位于子宫肌层 ,间情期时 ,SA 30免疫组和对照组子宫内肥大细胞在数量上无明显差别 (P >0 0 5 ) ;而妊娠第 3天的小鼠子宫中 ,SA 30免疫后肥大细胞显著增多 (P <0 0 5 )。提示SA 30免疫可能诱导妊娠早期小鼠子宫内的细胞免疫反应 ,从而导致生育力的下降。