BACKGROUND Growth factor receptors such as epidermal growth factor receptor 1 and human epidermal growth receptor 2 (HER2) are overexpressed in certain cancer cells. Antibodies against these receptors (eg. cetuximab and transtuzumab [Herceptin]) have shown therapeutic value in cancer treatment. The existing methods for the quantification of these receptors in tumors involve immunohistochemistry...

Recently, we began a search for easily detected changes in the optical properties of neurons that occur during excitation (1, 2). Until now, changes in extrinsic fluorescence were the most sensitive indicators of neuronal activity. More than 500 fluorescent dyes have been examined on giant axons from squid and a number were found (2) which gave fluorescence changes during single action potentia...

The present study aims at investigating the potential of activated carbon AC prepared from waste cotton fiber for the removal of Acid Dyes from aqueous solutions. The prepared activated carbon was characterized by pore structure analysis, Fourier transforms infrared spectroscopy FTIR. Batch adsorption studies were carried out and the effect of experimental parameters such as pH, initial dye con...

Propagation of electrical signals is studied in Retzius cells of the leech in culture using voltage-sensitive fluorescent dyes at a spatial resolution of 8 x 8 microns 2 and 14 x 14 microns 2 and at a sampling interval of 0.12 ms. The neurons are stimulated by a microelectrode impaled in the soma. Action potentials of a half width of 2-3 ms are triggered close to the end of the primary neurite ...

Abstract The aim of this study is to separate PET flakes by applying floatation technique, initially from binary polymer blends and later the mixture five common polymers such as polypropylene, polyethylene, poly(vinyl chloride), polstyrene poly(ethylene terephthalate). A connection line between fiber presumed in study, because dyeing recovered polyester with three disperse dyes followed. separ...