Lectin receptors in snail proteogalactans. II.Archachatina marginata andAchatina achatina (preliminary report)

Summary The lectin receptor sites on the proteogalactans from the albumin glands of West African land snails,Archachatina marginata andAchatina achatina have been studied by precipitin reactions using the agar-gel double diffusion technique with various lectins. The proteogalactans from both snails have predominantly terminal -D-galactose structures; but they show characteristic differences in the topographical features at the surfaces of the carbohydrate structures presumed to be compatible with the combining site for these lectins.     

腮腺非上皮性良性肿瘤的多层螺旋CT表现

探讨了多层螺旋CT(MSCT)对腮腺非上皮性良性肿瘤的诊断价值.回顾性分析了12例经病理证实的腮腺非上皮性良性肿瘤患者的CT资料,其中3例行增强扫描.研究的12个病例中,神经鞘瘤1例,神经纤维瘤、囊肿、鳃裂囊肿和淋巴管瘸各2例,血管淋巴管瘤、血管畸形和脂肪瘤各1例.其中,9例肿瘤位于腮腺浅叶;7例形态规则.5例形态不规则;9例与正常腮腺组织分界清楚,3例分界不清;8例密度均匀,4例密度不均;增强后2例不均匀强化,1例(脂肪瘤)未强化.结果显示.腮腺非上皮性良性肿瘤的MSCT表现出一定的特征性,多表现为位于腮腺浅叶,形态规则,边界清楚;脉管性病变形态多不规则.边界不清楚;颈部均无异常肿大淋巴结.MSCT在其诊断和鉴别诊断中有重要的作用.     

兔狲消化腺特征

对兔狲消化腺的形态学特点进行了观测：兔狲有腮腺、颌下腺、舌下腺、臼齿腺和眶下腺５对唾液液腺，各腺管均开口于口腔，腮腺呈半环形，凳下腺呈长椭圆形，舌下腺为长三棱锥状，臼齿腺为长条状，眶下腺近似卵圆形；肝脏有胆囊，分为左右两叶，每叶又分为若干小叶。     

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。