

Tissue-Tearor
The Tissue-Tearor is a rotor/stator type tissue homogenizer which can rapidly homogenize, disrupt, and emulsify plant and animal samples in 0.5 - 1000 ml of liquid. Complete homogenization of tissues (muscle, liver, breast tissue, etc.) is usually achieved in ten to thirty seconds. Little, if any, heat is produced during the process. Rotor/stator homogenizers cannot efficiently disrupt microorganisms. This "limitation" can be an advantage if you want to homogenize or disperse tissue sample (or soil or waste samples) in order to recover viable bacteria or viruses for plating and analysis.
If you need a 230 volt unit, please select models that end in EUR. When ordering select one of our four different probe sizes - 04, 07, XL, and 14. Unlike most competitive Brands of rotor-stator homogenizer, THE TISSUE-TEAROR COMES COMPLETE WITH BOTH THE HIGH-SPEED MOTOR AND ONE STAINLESS STEEL PROBE OF YOUR CHOICE. See chart below for probe selection guidance. Additional probes are available. All are interchangeable with the TT motor unit. A cord-less variety of the TissueTearor is also available with model numbers ending in CL.
Our Price : $0.00
The Tissue-Tearor comes complete with a high speed, variable speed electric motor, one probe of your choice and a plastic storage stand. All probes are interchangeable with the Tissue-Tearor motor. See Parts & Acc's to order additional probes alone. The Tissue-Tearor with the 14 mm diameter probe does not come with a plastic storage stand.
Catalog Number | Practical Working Range (ml) | Probe Diameter (mm) | Probe Length (cm) |
985370-04 | 0.2-5.0 | 4.5 | 4.8 |
985370-07 | 0.5-50 | 7 | 8.3 |
985370-14 | 5.0-1000 | 14 | 13.2 |
985370-XL | 0.5-50 | 7 | 10.9 |
* Dimensions taken from stator.
Scents | Apricot, Lemon & Mango |
Color | test |
- Sample Volume Range: 0.2 to 1000 ml, depending on the probe selected
- Universal Motor: 110-120 volt, AC, 1.2 amp. Or, for some overseas applications, 230 volt, AC
- Probes: Type 316 stainless steel with fluorocarbon bushings
- Weight: Approximately 1/2 Kg
- Use for tissue cell disruption, emulsification and extreme mixing
- Practical answer for small samples of 10 mg to a few grams
- Easy to hold and light weight for one hand operation. Can also be stand mounted
- Inert to aggressive solutions. Stainless steel probe easily cleaned when processing multiple samples
- All probes are interchangeable and can be removed for autoclaving
- Extremely high speed 32,000 rpm motor with variable speed control
AWAY FROM ELECTRICAL LINES? Consider the model 780CL Cordless Tissue-Tearor. The purchase includes a cordless (i.e., battery operated), high speed motor, one probe of your choice, a rechargeable 9.6 volt Li battery pack and a plug-in battery charger. The maximum speed of the 780CL is slightly slower than the line-operated TissueTearor (25,000 vs 35,000 rpm). However, 25,000 rpm is quite adequate for homogenizing soft tissue like muscle, liver, or brain. The price for the 780CL Tissue-Tearor is the same as the line powered 985370 series. To order a Cordless Tissue-Tearor, combine the 780CL model number with the probe of your choice using the above table (example: 780CL-07).
OPERATING INSTRUCTIONS. See http://www.biospec.com/instructions/tissue_tearor/.
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干细胞的分类:
一) 根据个体发育过程中出现的先后次序不同,干细胞又可分为胚胎干细胞和成体干细胞。
(1)胚胎干细胞,它是一种高度未分化细胞。它具有发育的全能性,能分化出成体动物的所有组织和器官,包括生殖细胞。
(2)成体干细胞,它是存在于成年动物的许多组织和器官,比如表皮和造血系统,具有修复和再生的能力的细胞。在特定条件下,成体干细胞或者产生新的干细胞,或者按一定的程序分化,形成新的功能细胞,从而使组织和器官保持生长和衰退的动态平衡。
二)按分化潜能的大小,干细胞还可分为全能性干细胞、 多能性干细胞、单能干细胞等三种类型:
(1)全能性干细胞,它具有形成完整个体的分化潜能。如胚胎干细胞(简称ES细胞),具有与早期胚胎细胞相似的形态特征和很强的分化能力,可以无限增殖并分化成为全身200多种细胞类型,进一步形成机体的所有组织、器官。人类的全能干细胞可以分化成人体的各种细胞,这些分化出的细胞构成人体的各种组织和器官,最终发育成一个完整的人。人类的精子和卵子结合后形成受精卵,这个受精卵就是一个最初始的全能干细胞。
(2)多能性干细胞,这种干细胞具有分化出多种细胞组织的潜能,但却失去了发育成完整个体的能力,发育潜能受到一定的限制,骨髓多能造血干细胞是典型的例子,它可分化出至少十二种血细胞,但不能分化出造血系统以外的其它细胞。
(3)单能干细胞(也称专能、偏能干细胞),这类干细胞只能向一种类型或密切相关的两种类型的细胞分化,如上皮组织基底层的干细胞、肌肉中的成肌细胞或叫卫星细胞。
心肌梗死(Myocardialinfarction,MI)特征是心脏供血减少和心肌功能减弱,成人心脏的自我再生能力有限,使得心肌梗死的状况雪上加霜。由于干细胞具有自我更新复制能力和分化潜能,因此干细胞移植是使心脏组织再生和增强心脏功能的新的方法。最近的研究表明脂肪组织来源干细胞(ADSCs),即从脂肪组织分离的多能干细胞,具有广泛的分化潜能,可分化为心肌细胞。现分享一篇DNA转染(Entranster-H4000)与脂肪来源干细胞和心肌梗死研究的文献,以供参考。
Real-timetrackingofADIposetissue-derivedstemcellswithinjectablescaffoldsintheinfarctedheart.pdf(866.54k)
(2) 与此相反,Dr. Gearheart从终止妊娠的胎儿组织中分离出多能性干细胞。捐献者自行决定了终止妊娠,从他们那儿获得了知情同意书后,Dr. Gearheart从原本要发育成睾丸或卵巢的胎儿部位取得细胞。尽管Dr. Thomson 实验室和Dr. Gearheart实验室使用的细胞系来源不同,但发育成熟的细胞看起来非常相似。
体细胞核转移(SCNT)是得到多能性干细胞的另一种途径。在SCNT的动物研究中,研究者将一个正常的动物卵细胞去除细胞核(含染色体的细胞结构)。存留在卵细胞内的物质含营养成分和对胚胎发育非常重要的能量物质。而后,在非常精细调控的实验室条件下,将单个体细胞——除卵细胞或精子细胞之外的任一种细胞——与除去核卵细胞放在一起,使两者相融合。融合细胞以及其子细胞具有发育成一个完整个体的潜能,因此是全能性的。正如图I所示,这些全能性细胞不久将形成胚囊,从理论上来说,可利用胚囊的内细胞群来建立多能性干细胞系。实际上,任何一种可生成人类胚囊细胞的方法都有可能成为人体多能性干细胞的来源。
原代培养效果很好,第四天便成典型梭形鱼群状生长;第六天传代
但传代后细
胞形态发生改变,属于正常吗,请大神知道,初次培养;万分感谢
低黏附培养板,每孔接种5000个细胞,无血清培养,但是第二天去看,感觉细胞都抱在一起死了,求哪位前辈帮忙看看,这是怎么回事
第一次养胚胎干细胞,复苏的时候复苏到六孔板中的其中一个孔中,结果发现细胞很多,于是换了两个6cm皿养,结果越养越少。很纳闷。请教了几位蚂蚁淘的前辈们,于是乎有几个问题还是在心中,希望还能在这里能得到答复。
1。培养细胞的时候是一定要在六孔板中吗?那一般复苏细胞的时候复苏到几个孔中呢?
2.细胞的密度是大概多少呢?
3.我用的基质胶,说明书上是1;80,结果在孵箱放了一小时后,发现没有想象的胶凝固的样子,没有像果冻那样。反而还是液体状的,这是能用还是不能用呢?
4.如果基质胶一开始就铺好,等到传代的时候再铺,中间每天都在换液,不容易污染吗?
5。刚复苏的细胞,一直漂浮在培养液里,是慢慢地细胞才会贴在基质胶上么,然后才会慢慢在基质胶上生长么?
全能干细胞具有能发育成各种组织器官的完整个体的潜能的细胞,如胚胎干细胞。多能干细胞没有发育成完整个体的能力,但具有分化出多种细胞组织的能力,主要在器官再生、修复和疾病治疗方面极具应用价值,多能干细胞还在研究当中,过去认为多能干细胞只能从人胚胎中获得,现在已能用体细胞转化为多能干细胞。
单能干细胞只能向一种类型或密切相关的两种类型的细胞分化,如上皮组织基底层的干细胞、肌肉中的成肌细胞。

