Exocytosis is the reverse of endocytosis . 出胞作用是内容作用的逆转。
2.
Both products are released by exocytosis . 两种产物都由外排作用释放出来。
3.
The exocytosis of milk fat may be related to its high lysolecithin content . 乳脂的外吐，可能与它溶血卵磷脂含量有关。
4.
Rab gtpases are involved in cell differentiation , migration , endocytosis and exocytosis , cytosolic proteins transport and regulation of the transport and fusion of vesicle . in neuron cells , rab gtpases play a crucial role in synaptic vesicle transmission and transmitter release Rab蛋白主要通过调节囊泡( vesicle )的出芽( budding ) 、运输、锚定和融合，参与细胞的分化发育、细胞的内吞和外排、胞内蛋白的运输、交换和定位以及神经递质的运输和释放。
5.
Nishio h . and colleagues find that rab3d mrna is upregulated in the course of myeloid differentiation into granulocytic pathway , which suggests that human rab3d may play a specific role in granulocytes functions , for example , exocytosis of neutrophil - specific granules or degranulation of both eosinophils and basophils 其他的研究者在实验中也发现， rab1a 、 rabz 、 rab4 、 rabs 、 rab6 、 rab7在白血病细胞的粒系或单核系分化途径中都有升高。可惜的是关于这方面的研究很少，也不深入。
6.
In order to investigate the role of mannose receptor ( mr ) of human sperm , the zona free hamster eggs were pre - incubated with purified mr ( pmr ) isolated from motile human sperm by mannose - agarose gel affinity chromatography . the ultrastuctural alteration and cortical granule exocytosis of the eggs were then observed by transmissian electron microscope and tritc - lca immunofluorescence microscope , respectively . the mice were immunized with pmr and the antiserum was raised . after capacitation and induction of the acrosome reaction , the human spermatozoa and oocytes were incubated with the antiserum . then the sperm penetration assay was undertaken 为了进一步探讨人精于mr在精卵融合中的作用，本文采用改良后的甘露糖-琼脂糖凝胶亲和层析法分离纯化人精子mr ，并将提纯的人精子甘露糖受体( purifiedmannosereceptor , pmr )作用于去透明带的金黄地鼠卵母细胞，运用透射电子显微镜技术和罗丹明偶联的兵豆凝集素( tritc - lca )免疫荧光标记技术观察pmr对卵子的影响。
7.
The results were as follows : ( l ) the pre - incubation of pmr induced the exocytosis of the cortical granules ( cgs ) in the oocytes and reduced the quantity of the microvillus on the surface of oocytes ; ( 2 ) the matrix of cg might migrate to the surface of plasma membrane of oocytes after pmr pre - treatment . ( 3 ) incubation of zona - free hamster eggs with spermatozoa pretreated with pmr a ntiserum was associated with a dose - dependent significant reduction in the number of spermatozoa binding to the oolemma , compared with a contraband with a dose - dependent reduction of the fertilization rate and the penetration index . the results indicate that mr of human sperm plays an important role in sperm - oocyte fusion and oocyte activation 结果显示： ( 1 )人精子mr能够诱发去透明带金黄地鼠卵母细胞中皮质颗粒的胞吐，并引起卵母细胞膜表面微绒毛形态和数量发生改变； ( 2 )皮质颗粒胞吐后，其内容物可结合到卵膜表面； ( 3 )抗mr抗血清预处理精子可抑制精子与卵子的结合与融合，使受精率、穿透指数和结合指数下降，并均有剂量依赖性。以上结果提示，人精子mr在受精过程中起重要作用，其主要作用可能是介导精-卵膜融合并促进卵母细胞的活化。
