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Presents a study on pericytes. Abundance on venules and capillaries; Functionally codependent on endothelial cell; Linkage of pericyte alteration with microangiopathy on diabetes.

Tests the hypothesis that mucus is unevenly distributed in trachea, based on previous observations of heterogenous flow rates of mucus in dogs. Advantages of nonaquaeous fixatives over conventional aqueous fixatives; Tendency for thicker mucus in the region of the trachealis muscle; Alteration in the lipid profile of mucus during disease states.

Deals with a study which characterized the presence of nuclear matrix metalloproteinase-2 (MMP-2) activity and hypothesize that its role may include degradation of the nuclear matrix protein poly (ADP-ribose) polymerase (PARP). Determination of the subcellular localization of MMP-2; Comparison of the amino acid sequence of bovine PARP with various MMP-2 cleavage recognition sequences.