dense adj. 1.密集的,(物质等)密度大的,(人口等)稠密的。 2.(烟、雾等)浓密的,浓厚的。 3.愚钝的。 4.【摄影】〔页片〕高密度的。 a dense forest 密林。 a dense metal 密度大的金属。 a dense fog 浓雾。 a man with a dense brain 头脑愚昧的人。 My dense lady, can't you follow 哎呀,我的傻太太,你真的听不懂吗? adv. -ly ,-ness n.
electron n. 【物理学】电子。 the electron beam 电子束。 the electron theory 电子(学)说。
Conclusions electron microscopic obser vations show that the alveolar epithelial cells , endothelial cells and basement membrane are all injured , interstitial macrophages hyperpplasia , mast cells infiltration and degranulation , electron - dense deposits at alveolar wall are present 结论电镜观察可见特发性肺纤维化时肺泡上皮细胞、血管内皮细胞及基底膜均有损伤,并可见间质巨噬细胞增生,肥大细胞浸润及脱颗粒,肺泡壁电子致密物沉积。
It was show in this thesis that the po activity existed histochemically in haemo - cyte and its peripheral zone . most po were electron - dense and homogenous . prophenoloxidase is found in both plasma and haemocytes . propenoloxidase is most abundant in large granule haemocytes , a small abount is present in some small granule haemocytes and hyaline cells , or absent Po大部分均质且电子密度很高。在细胞外有异物处的po密度最大。其中大颗粒细胞周围的po阳性产物最多,小颗粒细胞和透明细胞则很少或没有。
Results the major morphologic changes were as follows : histologically , alveolar inflammation and interstitial fibrosis were observed . electron microscopic findings were : 1 . alveolar type i cells were degenerated 、 broken - down and desquamated , endothelial cells were swelled , with inter cellular tight junction shortened , alveolar type ii cells hyperplastic , basement membrane thinned and deformed ; 2 . alveolar macrophages and interstitial macrophages were hyperplastic ; 3 . mast cells were infiltrated and degranulated ; 4 . electron - dense deposits were present at alveolar wall ; 5 . myofibroblasts 、 fibroblasts 、 collagen and basement membrane like material were hyperplastic 电镜观察可见: ( 1 ) i型肺泡上皮细胞变性、崩解和脱落,内皮细胞肿胀,细胞间紧密连接短小, ii型肺泡上皮细胞增生,基底膜变薄和破坏; ( 2 )肺泡巨噬细胞、间质巨噬细胞增多; ( 3 )肥大细胞浸润并见脱颗粒现象; ( 4 )肺泡壁电子致密物沉积; ( 5 )肌纤维母细胞、纤维母细胞、胶原原纤维及基底膜样物质增生。
Not only the neurons but also the as in the rat brain play a very important role in the process of the peripheral nociceptive stimulation ; ? he newly - found eda may be the functional intercommunication ultrastructure between neurons and as , through which the as could modulate the neurons in the pain signal processing ; @ as might play an active and important role for modulation of pain through a new pathway from the peripheral afferent nerve to the as , then to neurons via electron - dense areas forming the glia - neuron s ignaling network 光、电镜水平发现as与神经元之间有多种途径进行信息交流,新发现的eda有可能是神经元与as之间信息交流的结构之一。阻断as与神经元间信息交流连接后,前者对外周组织4第四军医大学博士学位论文损伤所致疼痛的反应不受影响,而后者的反应明显受到抑制,提示在非病理性疼痛反应中,胶质细胞对神经元具有主动调控作用。
Fos + / th + / gfap + and fos + / vp + / gfap + triple labeled n - asc could be found in the mvz , pvn and son respectively ; ( 2 ) under electronic microscope , the astrocytic processes connected closely with the dendrites or axons of the neurons , where the bilateral membranes became thick . we call transiently it electron - dense areas ( edas ) . the number of edas increased remarkably following hyperosmotic stimulation ; ( 3 ) when trace retrogradely , wga - hrp was microinjected into the unilateral son , pvn or nucleus of solitary tract ( nts ) respectively using the stereotaxic method , the n - ascs formed by the neurons triple - labeled with hrp / fos / th ( or vp ) and astrocytes labeled with gfap could be found in the mvz , son and pvn respectively ; ( 4 ) after being treated with heperosmotic nacl solution , intracellular calcium concentration in cultured hypothamic neurons and astrocytes increased and then decreased 脑内gfap阳性结构也明显增多,其分布与fos阳性细胞分布基本一致,表现为胞体肥大、突起粗长; ast紧密包绕在神经元周围形成神经元- ast复合体( n - asc ) ;在mvz 、 pvn和son三重免疫组化染色切片上可见到fos + th + gfap +第四军医大学博士学位论文和fos vp gfap三重标记asc ; ( 2 )免疫电镜下son内星型胶质细胞突起与神经元树突或轴突之间接触部位出现增厚的膜结构一电于致密区( edas ) ,高渗刺激后数量明显增多: ( 3 )将们个mp注入大鼠一侧n卜、卜卜或孤束核( ws ) ,分别在延髓内脏带( mvz ) 、 so和pvn内出现fos hrp th 、 fos hrp八p三重标记神经元和gfap阳性标记ast形成的n asc ; ( 4 )高渗刺激使培养神经元和ast内钙水平先升高后降低,最后维持在比高渗刺激前稍高的静息钙水平上。