此外,在近期我们发表的一篇文章里详细介绍了试验方法,操作类似,在此提供,希望能有所帮助。
The primary anti-iNOS was rabbit multiclonal antibody (Sigma Co., USA), and the ABC kit was purchased from the Boster Company in Wuhan, China. The procedure of iNOS immunohistochemistry was as follows. Phosphate buffered saline (PBS, 0.1 mol/L, pH 7.2-7.4) was used to replace the primary antibody for negative control. The sections were soaked in double distilled water for 15 min, then incubated at room temperature in 3% hydrogen peroxide for 10 min to inactivate endogenous peroxidase, and then treated with PBS for 2 min. After the nonspecific reaction was blocked with normal goat serum at room temperature for 20 min, the sections were incubated with a reaction buffer containing primary antibody at a dilution of 1:100 for at least 14 h at 4°C. The sections were then washed three times with PBS for 15 min before being incubated with biotinylated anti-rabbit IgG for 20 min at 37°C. The reaction was terminated by washing the sections with PBS for 15 min. Then the sections were incubated with streptavidin biotin complex solution at 37°C for 20 min, followed by four washings with PBS for 5 min each time. Finally, they were visualized with diaminobenzidine substrate working solution and then counterstained with hematoxylin.作者: utt0989 时间: 2012-8-30 17:32
此外,在近期我们发表的一篇文章里详细介绍了试验方法,操作类似,在此提供,希望能有所帮助。
The primary anti-iNOS was rabbit multiclonal antibody (Sigma Co., USA), and the ABC kit was purchased from the Boster Company in Wuhan, China. The procedure of iNOS immunohistochemistry was as follows. Phosphate buffered saline (PBS, 0.1 mol/L, pH 7.2-7.4) was used to replace the primary antibody for negative control. The sections were soaked in double distilled water for 15 min, then incubated at room temperature in 3% hydrogen peroxide for 10 min to inactivate endogenous peroxidase, and then treated with PBS for 2 min. After the nonspecific reaction was blocked with normal goat serum at room temperature for 20 min, the sections were incubated with a reaction buffer containing primary antibody at a dilution of 1:100 for at least 14 h at 4°C. The sections were then washed three times with PBS for 15 min before being incubated with biotinylated anti-rabbit IgG for 20 min at 37°C. The reaction was terminated by washing the sections with PBS for 15 min. Then the sections were incubated with streptavidin biotin complex solution at 37°C for 20 min, followed by four washings with PBS for 5 min each time. Finally, they were visualized with diaminobenzidine substrate working solution and then counterstained with hematoxylin.作者: 阿敏 时间: 2012-8-30 17:35
7-Amino-actinomycin D (7-AAD),7-氨基放线菌素D,是一种核酸染料,在流式细胞术中用于鉴定死细胞,这种作用与PI相似。但它较PI有一定优点,就是PI检测时同时占据FL-2和FL-3两个通道,如果要进行比较复杂的多色分析时不太方便,而7-AAD只占FL-3通道,这样在像FACSCalibur这样的仪器上还可以同时使用另外三种荧光标记。
选取重约300 g 的封闭群豚鼠10 只,雌雄兼有,均耳廓反射灵敏,耳镜检查正常。以1 %戊巴比妥纳(40 mg/ kg) 腹腔注射麻醉,断头,迅速取出双侧听泡,用75 %酒精浸泡2 min ,无菌等渗盐水冲洗后浸入D2Hanks 液中。解剖显微镜下剪去听泡骨壁,钩破蜗尖,自顶回至基底回完整剥离出耳蜗外侧壁软组织带,并仔细分离出含深色色素的血管纹,将血管纹组织块切碎,均匀平铺于两个35 mm 的培养皿底(事先加有鼠尾胶原) ,静置30 min ,向培养皿中加入含有25 %胎牛血清(Hyclone) 的DMEM培养液( Hyclone , 另加L2谷氨酰胺0. 9 g/ L , Hepes 20mmol/ L ,青霉素100 U/ ml ,链霉素100μg/ ml) ,置5 % CO2 ,37 ℃培养箱中培养 。有细胞生长后,每3 d 更换约1/ 2 的培养液,10 d 后进行首次传代:吸掉全部培养液,用D2Hanks 液冲洗培养皿3 次,用0. 25 %胰蛋白酶(含0. 01 % EDTA) 消化液消化,常温下约5 min 大部分细胞开始脱壁,中止消化,取出组织块,将细胞悬液离心,弃去上清液后加培养液,台盼蓝染色并计数,细胞成活率约90 %。将未染色的细胞悬液接种于培养瓶中继续培养,细胞密度为(2~3) ×105/ ml 。
It was difficult to obtain a large quantity of intact virions by routine sucrose gradient centrifugation. After modifying the sucrose gradient by adding citrate sodium, you can obtain a large quantity of intact virions and nucleocapsids.
please read this reference:
一种改良的对虾白斑综合征病毒的提纯技术
【刊名】 中国病毒学, 2003年 04期
wish it be helpful! 作者: hot_hot_hot 时间: 2012-8-31 11:50
我特别想知道怎样对玉米幼胚愈伤进行悬浮培养得到悬浮细胞体系。这一过程中需要哪些仪器设备,悬浮培养用什么培养基,培养条件是什么,多长时间继代,怎样去除培养过程中的死细胞和细胞碎片,收获时细胞浓度应到多少,怎样计算细胞浓度?这些问题都要向各位请教。
盼望回复!!Expecting your reply!!作者: kewanqi2011 时间: 2012-8-31 11:52
My dear friends,good evening , I am deadly need the basic knowledge of the bony structure of rats,if you would like to give me a hand ,i say thanks here firstly and email me pl. , and my mailbox is serpent65_2@hotmail.com
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silly bulb from hlj作者: kswl870 时间: 2012-8-31 11:52
最近在翻译一片文章,是关于z纳米技术在细胞毒理学方面的应用的。
不知下句如何翻译,请高手帮帮忙:
Nanoelectromechanical systems(NEMs) oscillators are resonant frequency-based detection sensors that sense changes in an established resonant frequency based on t..he mass applied.These sensors can be used as a mass-based biosensor by applying capture antibodies albe to bind a specific organism to the oscillator.作者: eric930 时间: 2012-8-31 12:38 标题: 回复 #267 junjie05 的帖子
NH4NO3 0.4
KNO3 1.8
CA(NO3)2 x 4H2O 1.2
MgSO4 x 7H2O 0.36
KH2PO4 0.27
Boxus. Ph., Terzi, J.M., Lievens, Ch., Plyser, M., Ngaboyamahina, P., Duhem,
K. (1991) Improvement and perspectives of micropropagation techniques
applied to some hot climate plants. Acta Horticulturae 289:55-64
此培养基配方源自以下文献:
Quoirin, M., Lepolvre, P., and Boxus, P., 1977. Un premier bilan de 10 annees de recherches sur les cultures de meristemes et la multlplcatlon in vitro de fruitiers ligneux. In C.R. Rech. 1976-1977 et Rapports de synthese Stat. Cult. Fruit, et Maralch. Gembloux. Belgium:93-117作者: HPLC使者 时间: 2012-8-31 12:56
提供几篇文章
1. Klaunig, J. E., Goldblatt, P. J., Hinton, D. E., Lipsky, M. M., Chacko, J., and Trump, B. F. (1981). Mouse liver cell culture 1. hepatocyte isolation. IN VITRO Vol.17.No.10 October, 913-925.
2. Kreamer, B. L., Staecker, J. L., Sawada, N., Sattler, G. L., Hsia, M. T. S., and Pitot, H. C. (1986) Use of low-speed ,iso-density percoll centrifugation method to increase the viability of isolated rat hepatocyte preparations. IN VITRO CELLULAR & DEVELOPMENTAL BIO. Volume 22,Number 4,April 201-211.
3. Sambrook, J., Fritsch, E. F., Maniatis, T., (1989) Lysis of cultured mammalian cells. Molecular Cloning. 18.34作者: xingyi08 时间: 2012-8-31 13:04
HeLa cells are positive for keratin by immunoperoxidase staining.
HeLa cells have been reported to contain human papilloma virus 18 (HPV-18) sequences.
P53 expression was reported to be low, and normal levels of pRB (retinoblastoma suppressor) were found.
HeLa S3 is a clonal derivative of the parent HeLa line (see ATCC CCL-2). S3 was cloned in 1955 by T.T. Puck, P.I. Marcus, and S.J. Cieciura. [22814]
The HeLa S3 clone has been very useful in the clonal analysis of mammalian cell populations relating to chromosomal variation, cell nutrition, and plaque-forming ability.
This line can be adapted to grow in suspension. [25952]
The cells are positive for keratin by immunoperoxidase staining.
A culture at approximately passage 400 was submitted to the American Type Culture Collection in February, 1972.
HeLa cells have been reported to contain human papilloma virus 18 (HPV-18) sequences. [23180]作者: hyuu 时间: 2012-8-31 13:15
[1] Dobbs L G, Gonzalez R, Williams M C. An improved method for isolating type Ⅱ cells high yield and purity[J]. Am Rev Respir Dis,1986,134(1):141-145.
[2] Mason R J, Walker S R, Shields B A, et al.Identification of rat alveolar type Ⅱ epithelial cells with a tannic acid and polychrome stain[J]. Am Rev Respir Dis, 1985,131(5):786-788.
[3] Cunningham A C, Milne D S, Wilkes J, et al. Constitutive expression of MHC and adhesion molecules by alveolar epithelials(type II pneumocytes)isolated from human lung and comparison with immunocytochemical findings[J]. J Cell Sci,1994,107(Pt 2):443-447.
[4] 崔社怀,郭先健,钱桂生.鼠肺泡Ⅱ型上皮细胞的分离、鉴定和培养[J].第三军医大学学报,1997,19:548-550.
[5] 刘新民.肺泡上皮AT-Ⅱ研究进展[J].国外医学:呼吸系统分册,1994,14(2):88-91.作者: ero11 时间: 2012-8-31 13:22
UVA损伤角质形成细胞模型制作:
将细胞放入完全角质形成细胞基础培养基后置于37 ℃、5 % CO2 孵箱。UV 照射前,将2 ×105 个细胞接种到3. 5 cm Pet ri 组织培养板后置于1 ml 完全基础培养基中孵育过夜,无菌磷酸盐缓冲液( PBS) 冲洗后放入1. 5 ml PBS 中照射。照射后,细胞置于1ml 含1 %胎牛血清( FCS) 基础培养基中孵育。