The maintenance of normal chromatin morphology requires ongoing RNA synthesis. We have examined the role of RNA in chromatin organization, using selective detergent extraction of cells, RNA synthesis inhibitors, and enzymatic digestion of nuclear RNA. Comparison of extracted and unextracted cells showed that the important features of chromatin architecture were largely unchanged by the extracti...

In recent years, there has been an outbreak of research on natural fiber-reinforced materials to reduce non-recycled material effects and produce environmentally friendly products. parallel with the increasing popularity additive manufacturing, development new in this field also increased improve pure characteristics raw usage. This study presents manufacturing process %5 waste jute-reinforced ...

1The terminology used in this report is the one adopted by the 5th International Congress of Pigment Cell Biology held at the New York Academy of Sciences in 1961. into the differentiating medullary and cortical cells of the hair. A number of genes affect hair color in mammals by controlling both the synthesis and transfer of pigment. Investigations of the melanocytes of the hair follicle with ...

Neuropeptide- and hormone-containing secretory granules (SGs) are synthesized at the trans-Golgi network (TGN) as immature secretory granules (ISGs) and complete their maturation in the F-actin-rich cell cortex. This maturation process is characterized by acidification-dependent processing of cargo proteins, condensation of the SG matrix and removal of membrane and proteins not destined to matu...

Parafollicular cells in mammalian thyroid glands are thought to be responsible for the secretion of calcitonin. In this study, calcitonin was localized in pig thyroid gland by an indirect immunocytochemical technique using rabbit antiserum directed against synthetic porcine calcitonin for the first step, and sheep Fab fragments prepared against rabbit Fab and coupled to cytochrome c for the sec...

Cryofixation, freeze-etch techniques were used to study the structure of cake batters made from a lean cake formulation before heating and after heating to temperatures up to l00-l02 °C. Batters were prepared without added emulsifiers and with saturated and unsaturated monoglycerides replacing 5 and l 0% of the oil. Unsaturated monoglyceri des were more effective than saturated monoglycerides i...

Electron microscopic evidence is presented, from mitochondria in whole cells of toad urinary bladder and from isolated rat kidney mitochondria, indicating that the divalent cations calcium, strontium, and barium are accumulated in granules localized in the mitochondrial matrix. This accumulation occurs under conditions in which divalent ions are present in the medium bathing either whole cells ...

megaloporous controlled release tablets of diclofenac sodium (ds) were prepared with two kinds of granules. one of them is the restraining-phase matrix granule (rmg) and it controls the release rate of the drug. the other one is the soluble housing-phase matrix granule (hmg) and controls liquid penetration into the system. carnauba wax and eudragit l 100 polymers were used to constitute the res...

The issue of the nanocomposites’ synthesis using aluminum matrixes, reinforced with carbon nanotubes, high physical and mechanical performance capabilities, as related to achieving homogeneous dispersion nanotubes in composite’s matrix has been considered. Basics preparation technology have developed requirements for parameters so-called «normalized» mixture (highly-homogeneous terms volume dry...