Changes in NO activity may play an important role in the early increase in microvascular flow that has been implicated in the pathogenesis of diabetic microangiopathy. We assessed, in the in situ spinotrapezius muscle preparation of 6 weeks' streptozotocin-diabetic rats (n = 6) and of age-matched controls (n = 8), basal inside diameters of A2-A4 arterioles and the reactivity to topically applie...

1. The functional unity of cirri and membranelles can result structurally only from extensions of the ciliary membrane. 2. The pellicle is composed of an outer pellicular membrane and an inner cytoplasmic membrane. 3. The ciliary rootlets are composed of numerous filaments 120 A in diameter with central areas of low density. They have no periodic structure. 4. The ciliary membrane is a double-l...

Background and Purpose—Mexican Americans are the largest subgroup of Hispanic Americans, now the most numerous US minority population. We compared access to care, acculturation, and biological risk factors among Mexican American and non-Hispanic white stroke patients and the general population. Methods—The Brain Attack Surveillance in Corpus Christi project is a population-based stroke surveill...

The sheathed flagellum of Vibrio metchnikovii was chosen for a study of the attachment of the flagellum to the bacterial cell. Normal and autolysed organisms and isolated flagella were studied by electron microscopy using the techniques of thin sectioning and negative staining. The sheath of the flagellum has the same layered structure as the cell wall of the bacterium, and in favourable thin s...

This study investigated the effects of Spirulina (Arthrospira plantensis) supplementation level, basal diet, sire breed, and sex on wool quality parameters in purebred and crossbred Merino lambs. A total of 48 lambs, over two consecutive years (n=24 per year), was randomly allocated into Spirulina supplementation level (CONTROL, LOW, MEDIUM, HIGH) groups and balanced by sire breed (Black Suffol...

Forest fragmentation arising from modern forestry practices has dramatically increased the amount of edge habitat relative to interior habitat. Edge habitats have unique microenvironments that have the potential to profoundly impact forest communities. In this study, we characterized the forest composition and structure of edge and interior plots within a second growth big leaf maple-Douglas fi...