Tissue quality

Quality Assurance Project Plan for Sample Collection Activities for a National Study of Chemical Residues in Lake Fish Tissue Quality Assurance Project Plan for the National Pesticide Survey of Drinking Water Wells... 

Shorter-term temporal variation in leaf quality should act to complicate the spatial arrays described above. Thus, not only may a foraging insect have difficulty locating suitable feeding sites in space, but their locations may shift from time to time or continuously, as seasonal changes, induction effects, or even plant pathogen attack (44) alter tissue quality. A suitable tissue at one time may not be suitable later in the day, or later in the insect s life. 

K. H. Watanabe, F. W. Desimone, A. Thiyagarajah, W. R. Hartley, A. E. Hindrichs, Fish tissue quality in the lower Mississippi river and health riisks from fish consumption, Sci. Total Environ., 302 (2003), 109-126. 

Chemical composition is an important contributor to bone quality, a term that encompasses the effects of architecture, composition and remodeling dynamics. An important advantage of infrared (IR) and Raman imaging in bone studies is that they allow the imaging of parameters that measure tissue quality and competence. These are usually measured as band height or band area ratios, and in some cases as band widths. Although measures of tissue properties are similar in both IR and Raman spectroscopy, the IR metrics have been validated with other techniques. 

The hybridization buffer usually contains 5 X SSC, 50% formamide, 100 xg/ml carrier DNA/tRNA, 0.1% Triton X-100 and 20 mM vanadyl ribonucleoside in addition to denatured probe. In the case of optimal probes of 150 bases (40-60% GC), the optimal hybridization temperature (T — 25 0 in this buffer would be about 56-70°C for RNA probes and 37-6 TC for DNA probes (eqs. (11) and (12), Chapter 2). However, very high temperatures, e.g., > 50°C, affect tissue quality. Usually, incubation is at 20-50°C in a humidified environment. 

Herkenham M, Pert CB (1982) Light microscopic localization of brain opiate receptors a general autoradiographic method which preserves tissue quality. J. Neuroscl, 2, 1129-1149. 

Scheduled bronchoscopies are performed routinely during the first year after transplantation at most transplant centres. Inspection of the anastomotic sutures, control of anastomotic wound healing, BAL with microbiologic cultures and transbronchial biopsies are taken to document lung tissue quality and to diagnose acute or chronic lung rejection, invasive infections and eventually to perform interventional procedures such as dilatation or stenting of bronchial stenosis. 

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