Commercial support, tissue

In the US, commercial support has principally been directed in the area of applied research whereas the 10 % governmental support focused on more basic research. In Japan and Europe, tissue engineering is largely driven by... 

The FOX assay applied to a skatole oxidation product isolated by HPLC gave a positive result, supporting the contention that it is skatolyl hydroperoxide (40) . Mixtures of 183 and the eight diastereoisomeric hydroperoxides 184 and 185 derived from thymidine (42), as shown in equation 64, can be separated and detected by RP-HPLC with UVD at 229 nm. Each isomer is determined by applying the FOX assay using a capillary reactor heated at 60 °C to provide sufficient time for total oxidation of the Fe(ll) ions, followed by UVD at 596 mn . A commercial kit based on the FOX assay for hydroperoxide determination in plasma, serum and tissue homogenizates appears in Table 2. 

WOOD. A vascular tissue which occurs in all higher plants The most important commercial sources of wood are the gymnosperms, or softwood trees and the dicotyledonous angiosperms, or hardwood trees. Botanically, wood serves the plant as supporting and conducting tissue, and it also contains certain cells which serve in the storage of food. The trunks and branches of trees and shrubs are composed of wood, except for the very narrow cylinder of pith in the center and the bark which covers the outside. Botanists refer to wood by its Greek name, xylem. 

Because of the favorable sorptive properties of the reversed-phase supports, batch adsorption and desorption can be a very effective way to desalt a chromatographed sample or to partially fractionate a peptide mixture during a purification procedure. For example, 1-2 gm of an oc-tadecyl silica packed into a silanized glass or plastic pipette can be used for the batch fractionation of small amounts of a crude peptide extract from tissues, such as the pancreas or pituitary, or from a synthetic experiment. A number of commercial products, such as the Waters Sep-Pak, have found use in this manner 10) as a purification or sample preparation aid. Protocols for batch extraction procedures on alkyl silicas have been discussed 17a,b) and applied to neuropeptides 10, 158, 166) and other hormonal peptides 88, 162, 167, 168). With these methods recoveries of peptides present in a tissue extract are generally higher than those found with classical fractionation techniques due in part to the fact that proteolytic degradation is minimized. 

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