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Merck

Exploring the human mesenchymal stem cell tubule communication network through electron microscopy.

Ultrastructural pathology (2014-10-01)
Sabrina Valente, Roberta Rossi, Leonardo Resta, Gianandrea Pasquinelli
ABSTRAKT

Cells use several mechanisms to transfer information to other cells. In this study, we describe micro/nanotubular connections and exosome-like tubule fragments in multipotent mesenchymal stem cells (MSCs) from human arteries. Scanning and transmission electron microscopy allowed characterization of sinusoidal microtubular projections (700 nm average size, 200 µm average length, with bulging mitochondria and actin microfilaments); short, uniform, variously shaped nanotubular projections (100 nm, bidirectional communication); and tubule fragments (50 nm). This is the first study demonstrating that MSCs from human arteries constitutively interact through an articulate and dynamic tubule network allowing long-range cell to cell communication.

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Carbon nanofibers, graphitized, platelets(conical), >98% carbon basis, D × L 100 nm × 20-200 μm
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Carbon nanofibers, pyrolitically stripped, platelets(conical), >98% carbon basis, D × L 100 nm × 20-200 μm
Supelco
Hexamethyldisilazane, for GC derivatization, LiChropur, ≥99.0% (GC)
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Hexamethyldisilazane, produced by Wacker Chemie AG, Burghausen, Germany, ≥97.0% (GC)
Supelco
N,O-Bis(trimethylsilyl)acetamide, for GC derivatization, LiChropur, ≥98.5% (GC)
Supelco
Activated Charcoal Norit®, Norit® RBAA-3, rod
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Hexamethyldisilazane, reagent grade, ≥99%
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N,O-Bis(trimethylsilyl)acetamide, synthesis grade, ≥95%
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Methane-12C, 13C-depleted, 99.9 atom % 12C
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Hexamethyldisilazane, ReagentPlus®, 99.9%
Węgiel - Szklisty, rod, 100mm, diameter 5.0mm, glassy carbon
Węgiel - Szklisty, foil, 50x50mm, thickness 1.0mm, glassy carbon
Węgiel - Szklisty, foil, 100x100mm, thickness 1.0mm, glassy carbon
Węgiel - Szklisty, rod, 100mm, diameter 7.0mm, glassy carbon
Węgiel - Szklisty, rod, 200mm, diameter 7.0mm, glassy carbon
Węgiel - Szklisty, rod, 200mm, diameter 1.0mm, glassy carbon
Węgiel - Szklisty, foil, 100x100mm, thickness 2.0mm, glassy carbon
Węgiel - Szklisty, rod, 50mm, diameter 1.0mm, glassy carbon
Węgiel - Szklisty, rod, 200mm, diameter 10mm, glassy carbon
Węgiel - Szklisty, foil, 100x100mm, thickness 6.0mm, glassy carbon
Węgiel - Szklisty, rod, 5mm, diameter 3.0mm, glassy carbon
Węgiel - Szklisty, rod, 100mm, diameter 1.0mm, glassy carbon
Węgiel - Szklisty, rod, 200mm, diameter 3.0mm, glassy carbon
Węgiel - Szklisty, foam, 150x150mm, thickness 2.5mm, bulk density 0.05g/cm3, porosity 96.5%
Węgiel - Szklisty, foil, 10x10mm, thickness 1.0mm, glassy carbon
Węgiel - Szklisty, foam, 150x150mm, thickness 3.2mm, bulk density 0.05g/cm3, porosity 96.5%
Węgiel - Szklisty, rod, 200mm, diameter 5.0mm, glassy carbon
Węgiel - Szklisty, foam, 300x300mm, thickness 30mm, bulk density 0.05g/cm3, porosity 96.5%
Węgiel - Szklisty, foam, 150x150mm, 0.05g.cmué, porosity 96.5%, 24 pores/cm
Węgiel - Szklisty, foil, 10x10mm, thickness 4.0mm, glassy carbon