改良果蝇唾液腺染色体制片法

根据长期的教学实践，本文对果蝇唾液腺染色体玻片标本制作方法进行了改进．采用改进后的方法，能够使玻片标本的背景底色减弱甚至消失，染色体完整而清晰地呈现于视野中，实验成功率高，使果蝇唾液腺染色体制作与观察实验的教与学均达到满意的效果．     

澳大利亚麦龙虾触角腺组织学的初步研究

本文首次报道了以组织学手段对澳大利亚淡水螯虾-麦龙虾的触角腺进行研究的结果。根据组织学(?)征麦龙虾的触角腺可分为三个部分,它们依次为:端囊,迷路和肾管。端囊部分的细胞呈柱状,细胞核位于基部或中部。迷路部分的细胞呈短柱状,顶端有刷状缘,核位于基部或亚中部。肾管部分的细胞扁平,核很大偏向顶端,占据了细胞的大部分空间。在迷路和肾管部分没有明显的亚区的分别。     

小白鼠饮食失节后糖皮质激素分泌功能的变化

因饮食失节而致脾虚的小白鼠,其血清皮质酮水平明显升高,肾上腺的维生素C含量显著下降,而肾上腺指数呈相应增加;且所有这些症状均是暂时的,可逆的.四君子汤可使症状完全消失.     

Lipid peroxidation,low-level chemiluminescence and regulation of secretion in the mammary gland

In mammary explants of lactating mice, changes in the intensity of chemiluminescence (CL) were observed after the addition to the incubation medium of hormones and mediators that are involved in the regulation of secretion: oxytocin, acetylcholine, epinephrine and norepinephrine. A 15-min period of treatment with oxytocin, epinephrine or norepinephrine changed the level of thiobarbituric acid-reactive substances (TBARS). Two mammary explants, one of which was treated with oxytocin, acetylcholine, epinephrine or norepinephrine, were found to interact even when separated by a quartz glass wall. Analysis of the level of TBARS formation in these two explants showed that the observed interactions might be connected with light emission resulting from lipid peroxidation (LP) processes. The possible role of LP and low-level CL in the regulation of mammary gland secretion is discussed.     

泽蛙(Rana limnocharis)不同生活周期的生理生态研究

本文报道了泽蛙不同生活周期的生理生态特征:①繁殖期(5月)的耗氧量最大;繁殖期(8月)次之;冬眠期(1月)最小、只占5月的39.38%、8月的54.20%。②肾上腺皮质细胞直径和核直径繁殖期较长,冬眠时显著缩短。③觅食期(10月)肝含水量最多,冬眠时肝含水最少。④与耗氧量降低相适应,冬眠时RBC数目、Hb含量,RBC直径明显低于繁殖期,觅食期。⑤冬眠时,主要能量供给为活动季节里积累在肝脏与脂肪体中的营养物质。     

蟋蟀受精囊超微结构的研究

黄脸油葫芦雌体受精囊主要由腺细胞和肌肉构成，在透射电镜下观察后发现，受精囊由内向外依次分为内膜，腺细胞层，基膜和肌肉层四层结构，其中，腺细胞层比较发达，主要是由细胞体和毛细分泌管组成；而肌肉层则由纵、环肌两层结构组成，纵肌位于内侧，而环肌位于外侧，纵环肌皆为横纹肌。     

组织化学方法定位陆地棉色素腺体中的多酚羟基萘醌类化合物

运用组织化学方法探测陆地棉( Gossypium hirsutum L.)色素腺体内所含的主要次生代谢物质,Fast Blue BB验证了色素腺体内含有大量的多酚类物质,FeCI3检测证实色素腺体不仅是萘醌类物质的积累场所也是产生场所,醋酸铅检测证实萘醌类物质在色素腺体的分泌细胞内产生、在色素腺体的腔内积累.其中,醋酸...     

Presence of serum proteins in submaxillary duct perfusate

Summary The secretory activity of the main excretory duct of rat submaxillary gland was investigated by the technique of luminal perfusion. Immunologic studies of the perfusate revealed the presence of serum antigens and the absence of intrinsic submaxillary gland antigens. It is suggested that the submaxillary duct permits passive transport of serum proteins to saliva from serum.     

Mammalian pineal melatonin: A clock for all seasons

Summary The central role of the pineal gland and its hormone melatonin (MEL) in mammalian photoperiodic responses is discussed in terms of: 1) evidence for the involvement of MEL in photoperiodism, 2) which feature of the MEL secretion profile might be most important for regulating photoperiodic responses, 3) evidence for the modulation of responses to changes in daylength based on previous photoperiod exposure (i.e., photoperiodic history) and 4) how the MEL signal might be processed at its target sites to elicit physiological responses.