Product Description
Advanced BioMatrix offers PhotoCol®, a purified methacrylated Type I bovine collagen kit. PhotoCol® provides native-like 3D collagen gels with the unique attributes to be prepared at various concentrations and crosslinked to provide various gel stiffness.
PhotoCol® kits consists of purified methacrylated Type I bovine collagen as the core component with other support reagents in the kit. This PhotoCol® product only contains the methacrylated collagen. For the entire photocrosslinking kit, please visit any of the PhotoCol® Kit pages.
Table 1:
| Item | Catalog Number | Package Size |
| Methacrylated Collagen | #5198 | 100 mg |
The methacrylated Type I collagen is produced from telo-peptide intact bovine collagen where the collagen has been modified by reacting the free amines, primarily the ε-amines groups of the lysine residues as well as the a-amines groups on theN-termini. > 20% of the total lysine residues of the collagen molecule have been methacrylated. The collagen is extracted from bovine hide and contains a high monomer content.
| Parameter, Testing, and Method | Methacrylated Collagen#5198 |
| Sterilization Method | Filtration |
| Extraction Method | Acid - Telocollagen |
| Form | Lyophilized Powder |
| Degree of Methacrylation | >20% |
| Package Size | 100 mg |
| Storage Temperature | 2-10°C |
| Shelf Life | Minimum of 6 months from date of receipt |
| Shelf Life After Reconstitution | 2 months |
Collagen Purity - Silver Staining | >99% |
| Kinetic Gel Test (Minutes) | <40 |
| Gel Formation Tube Test (Minutes) | <40 |
Electrophoretic Pattern - Coomassie Blue | Characteristic |
| Sterility - USP modified | No growth |
| Endotoxin (LAL) | <10.0 EU/mL |
| Source | Bovine Hide |
| Hydrogel Young's Modulus E (Pa) | Characteristic |
Directions for Use
Download the full Directions for Use PDF
Product Applications
PhotoCol®Methacrylated Collagen is a photocrosslinkable type I collagen for 3D cell culture and bioprinting.
As the most abundant protein in the body, collagen is a key component for cell culture. Collagen methacrylate can be used as a rapidly self-assembling type I collagen to form cross-linked hydrogels for tissue engineering[1]. It has been used with mesenchymal stem cells[2], fibroblasts, adipose derived stem cells, epithelial cells, and many more.
Collagen methacrylate is useful for forming scaffolds with varying degree of stiffness, by altering collagen concentration or the dose of UV-light exposure[2]. It is also being extensively characterized for its usefulness in 3D bioprinting (extrusion, inkjet, and photolithographic[3]).
PhotoCol® has been used for created 3D microniches[4], as well as for 3D bioprinting human corneas[5].
References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4172302/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4243547/
http://www.worldscientific.com/doi/abs/10.1142/S2339547817500091
https://onlinelibrary.wiley.com/doi/abs/10.1002/adbi.201700237
https://www.ncbi.nlm.nih.gov/pubmed/29772228
Product References
References for PhotoCol®:
Isaacson, A., Swioklo, S. & Connon, C. J. 3D bioprinting of a corneal stroma equivalent.Experimental Eye Research173,188–193 (2018).
Kathryn E. Drzewiecki et al, A thermoreversible, photocrosslinkable collagen bio-ink for free-form fabrication of scaffolds for regenerative medicine,TECHNOLOGY(2017).
Drzewiecki, K. E.et al.Methacrylation Induces Rapid, Temperature-Dependent, Reversible Self-Assembly of Type-I Collagen.Langmuir30,11204–11211 (2014).
Gaudet, I. D. & Shreiber, D. I. Characterization of Methacrylated Type-I Collagen as a Dynamic, Photoactive Hydrogel.Biointerphases7,25 (2012).
Izadifar, Mohammad, et al. "UV-assisted 3D bioprinting of nanoreinforced hybrid cardiac patch for myocardial tissue engineering."Tissue Engineering Part C: Methods24.2 (2018): 74-88.
Stoecklin, Celine, et al. "A New Approach to Design Artificial 3D Microniches with Combined Chemical, Topographical, and Rheological Cues."Advanced Biosystems(2018): 1700237.
Mazzocchi, Andrea, et al. "Optimization of collagen type I-hyaluronan hybrid bioink for 3D bioprinted liver microenvironments."Biofabrication(2018).
Nguyen, T. U., Watkins, K. E. & Kishore, V. Photochemically crosslinked cell‐laden methacrylated collagen hydrogels with high cell viability and functionality.Journal of Biomedical Materials Research Part A107,1541–1550 (2019).
Mazzocchi, A.et al.Pleural Effusion Aspirate for Use in 3D Lung Cancer Modeling and Chemotherapy Screening.ACS Biomaterials Science & Engineering5,1937–1943 (2019).
Chhetri, A.et al.Cell Culture and Coculture for Oncological Research in Appropriate Microenvironments.Current Protocols in Chemical Biology11,(2019).
Product Certificate of Analysis
Product Videos
How to Make 3D Collagen Hydrogels
Video
Telo vs Atelo Collagen
Video
Neutralization Solution for Easy 3D Collagen Gels
Video
Seeding Collagen Gels with Cells
Video
4 Key Components for 3D Collagen Gels
Video
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Safety and Documentation
Safety Data Sheet
Certificate of Origin
Declaration of Material Source
Product Disclaimer
This product is for R&D use only and is not intended for human or other uses. Please consult the Material Safety Data Sheet for information regarding hazards and safe handling practices.
美国AdvancedBioMatrix（简称ABM） www.advancedbiomatrix.comAdvancedBioMatrix（简称ABM）是美国一家著名的生物公司，获得了AllerganInc的授权(Allergan用25年时间不断完善胶原蛋白相关的产品的生产工艺)，将Allergan的专业和技术用于蛋白生产与检测，致力于为组织工程、细胞分析及细胞增殖等研究领域提供优质稳定的产品。AdvancedBioMatrix不断丰富已有产品线，目前可为三维细胞培养提供各种胶原蛋白、纤连蛋白、玻连蛋白、水性凝胶、不同粘度与分子量的透明质酸以及低代成纤维细胞等。在美国全部产品授权Sigma销售。AdvancedBioMatrix是组织培养，细胞分析和细胞增殖三维（3D）应用的生命科学领域的领导者。我们的产品被公认为纯度，功能性和一致性的标准。我们在生产，分离，纯化，冷冻干燥，细胞培养和蛋白质测试，粘附肽，附着因子，底物刚性和其他3D矩阵产品方面拥有丰富的专业知识。我们的专业技术和知识正在被用来确保我们的产品质量最高，批次之间一致且易于为我们的研究客户使用。
美国AdvancedBioMatrix是3D组织培养、细胞检测和细胞增殖等领域实验解决方案的佼佼者。AdvancedBioMatrix在分离、纯化、冻干、细胞培养和蛋白检测、多肽粘附、附着因子、基质硬度和其他3Dmatrix 产品开发方面有着丰富的经验。AdvancedBioMatrix的研发经验和专业知识确保其产品可达到最佳质量，并保证产品之间一致性，方便研究客户使用。以下为AdvancedBioMatrix3DMatrices 产品竞争优势：1. 提供高纯度和成分确定的胞外基质；2. 超过1000余篇文献引用PureCol产品，品质非常均一；3. 在3D培养基领域可提供最全面的产品线；4. 唯一可提供特异性刚性有机硅基板的公司（CytoSoft）;5. 唯一可提供可溶性丝纤蛋白的供应商（可运用于多种3D培养）；6. 如果客户首次接触3D胶原凝胶，AdvancedBioMatrix还是唯一的预制胶原蛋白(PureColEZGel)供应商；
以下产品为AdvancedBioMatrix全球畅销品：1.PureCol 牛源I型胶原蛋白 3mg/ml#5005-100ML2.Nutragen牛源I型胶原蛋白 6mg/ml#5010-50ML3.FibriCol 牛源I型胶原蛋白 10mg/ml#5133-20ML4.VitroCol 人源I型胶原蛋白 #5007-20ML5. 弹性蛋白原 #5052-1MG6.ECMSelectArraykitUltra-36#5170-1EA7.CytoSoft（刚性可变的基底，AdvancedBioMatrix最新添加产品5190-7EA）8. 人III型胶原蛋白 #5021-10MG9. 人IV型胶原蛋白 #5022-5MG10.SilkFibroin溶液 #5154-20ML11.Fibronectin#5080-5MG12.Vitronectin#5051-0.1MG
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问题：
1，既然外国公司的原材料这么贵，我就想购买国内厂家的，请各位大侠帮忙提供一下国内哪些厂家的玻璃胚针物廉价美？
2，国内的哪些大学的测试中心，能够提供拉针仪的有偿使用服务的？
具体操作是:局麻下将3～4根电极导管经股静脉、锁骨下静脉送入冠状静脉窦、高位右心房及希氏束、右心室等部位，刺激心房和心室诱发与临床一致的心动过速，定位心动过速起源点，然后将消融用的电极导管送达已定位的起源点并与体外的射频发生器相连。放电后重复电生理检查，若不能诱发心动过速且临床随访无发作，则说明消融成功。
此方法治疗的疾病有:预激综合征和房室结双经路引起的阵发性室上性心动过速、房扑和房颤、室性心动过速及房性心动过速。
脑电波：
脑电波（Electroencephalogram,EEG）是大脑在活动时，大量神经元同步发生的突触后电位经总和后形成的。它记录大脑活动时的电波变化，是脑神经细胞的电生理活动在大脑皮层或头皮表面的总体反映。
脑电波来源于锥体细胞顶端树突的突触后电位。脑电波同步节律的形成还与皮层丘脑非特异性投射系统的活动有关。
脑电波是脑科学的基础理论研究，脑电波监测广泛运用于其临床实践应用中。
电子波
电子波是指电子产品等所发出的电子辐
电子波的害处
电脑及大多数家用电器设备等都是可以产生各种形式不同频率、不同强度的电磁辐射源。
电磁辐射--对人体机理的危害
电场辐射危害人体的机理主要是热效应、非热效应和累积效应等。
热效应：人体70%以上是水，水分子受到电子波辐射后相互摩擦，引起机体升温，从而影响到体内器官的正常工作。
非热效应：人体的器官和组织都存在微弱的电磁场，它们是稳定和有序的，一旦受到外界电场的干扰，处于平衡状态的微弱电场即将遭到破坏，人体也会遭受损伤。
累积效应：热效应和非热效应作用于人体后，对人体的伤害尚未来得及自我修复之前（通常所说的人体承受力---内抗力），再次受到电子波辐射的话，其伤害程度就会发生累积，久之会成为永久性病态，危及生命。对于长期接触电子波辐射的群体，即使功率很小，频率很低，也能诱发体内想不到的病变，应引起警惕。
谢谢啦~
1.在没有开始记录（空跑的状态下）和开始记录时的波形的基线都不在0点而是处于负值，是因为仪器设备设置的问题还是仪器本身有损坏？
2.记录ACC场电的通道50Hz干扰特别大，接地线排干扰后仍然存在，可能是什么问题呢？
3.Brownlee440的Amplifier上有Gain，lowpassfilter，Highpassfilter的设置，这个设置对ACC场电的记录有影响吗？如果记录ACC的场电，一般常用的参数是多少啊？
4.有没有用过这个仪器记录过肌电的前辈，我用A-B模式可以记录到类似Chart5软件记录的肌电波形。可是用clampfit10.2的Analyze--statistics--Measurement--Area分析,分析出来的数值太小，与波形不符。从波形看，明显有强的肌肉收缩，但是数值却没有明显差异。有前辈分析过肌电吗？是否我的分析方法不对？或者是应为问题1中提到的基线不在0点所引起的曲线下面积分析的误差？
感谢！
