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Supplier: Electron Microscopy Sciences
Description: The new improved Kimball Physics Model ES-423E (Extended Life) LaB6 Cathode is a high performance, resistively heated, thermionic electron source. The improvement stability of the LaB6 crystal, results in less exposure of LaB6, which reduces Wehnelt aperture contamination. It is for use in Scanning Electron Microscopes, Transmission Electron Microscopes, Electronlithography Systems, and X-Ray Sources.

Minority or Woman-Owned Business Enterprise

Supplier: Bachem Americas
Description: The central E region of fibrin contains two sets of polymerization knobs, A and B, that are cryptic in fibrinogen but become exposed after thrombin cleavage of fibrinopeptide A (FpA) and fibrinopeptide B (FpB) from the N-terminus of the Aα- and Bβ-chains, respectively. The location of the binding holes and possible models for knob-hole interactions are known from X-ray crystallographic studies using synthetic peptide analogs of knobs A and B. When fibrinogen fragment D and double-D are crystallized in the presence of both peptide analogs, the knob A peptide mimic H-Gly-Pro-Arg-Pro-NH₂ (GPRP-amide, H-1998) forms H-bond interactions with residues γ364Asp, γ330Asp, γ329Gln, and γ340His found in hole a. In the same manner, the knob B peptide mimic H-Gly-His-Arg-Pro-NH₂ (GHRP-amide, H-7318) interacts with residues Bβ397Glu, Bβ398Asp, and Bβ432Asp in hole b.

Supplier: MilliporeSigma
Description: Optifix® Dispensers are available in four models, each of which is designed to increase efficiency and provide additional safety to daily laboratory operations. These dispensers are manufactured to the highest quality standards, ensuring accurate, reliable, and easy dispensing.

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Supplier: VWR International
Description: Made from high quality Type 1 Class A, 33 expansion Borosilicate glass, these crystallizing dishes have straight sides and flat bottom.
Supplier: VWR International
Description: Hands-On Manipulation with Colorful Models.

Catalog Number: (BDH7422-1)
Supplier: VWR International
Description: Made with iodine crystals, potassium iodide and deionized water.

Catalog Number: (470014-294)
Supplier: VWR International
Description: Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.


Catalog Number: (470148-986)
Supplier: VWR International
Description: Replicate a Water Molecule


Catalog Number: (470151-958)
Supplier: VWR International
Description: Build 14 Atomic Orbitals


Catalog Number: (470014-262)
Supplier: VWR International
Description: Sized so an entire classroom can see them, these giant molecular models are made from durable polyethylene.


Catalog Number: (470149-214)
Supplier: VWR International
Description: Build A Variety of Atomic Structures


Catalog Number: (470149-216)
Supplier: VWR International
Description: Adds Visual Impact to Biochemistry Demonstrations


Catalog Number: (470014-296)
Supplier: VWR International
Description: Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.


Catalog Number: (BDH7206-1)
Supplier: VWR International
Description: Made with iodine crystals, potassium iodide and deionized water.

Catalog Number: (470014-408)
Supplier: VWR International
Description: Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.


Catalog Number: (470014-292)
Supplier: VWR International
Description: Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.


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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
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To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • issued document with your organization's Federal Tax ID Number
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