In this paper we discuss the consequences of including new heavy righthanded neutrino singlets NR in the littlest Higgs model. These new states are not connected with the light neutrinos via the seesaw mechanism. A very interesting property of this extended model is the full coupling of the new neutral gauge boson AH to the right-handed neutrinos NR, giving large total cross sections and sugges...

Searching for virulence marking tests for Mycobacterium tuberculosis, Dubos and Middlebrook reported in 1948 that in an alkaline aqueous solution of neutral-red, the cells of the virulent H37Rv M. tuberculosis strain fixed the dye and became red in color, whereas the cells of the avirulent H37Ra M. tuberculosis strain remained unstained. In the 1950 and 1960s, fresh isolates of M. tuberculosis ...

1. The elimination of neutral red by the renal epithelium is a composite process, consisting of a direct and an indirect secretion. 2. The mechanism controlling direct secretion is concerned with the permeability of the two cell membranes. These two membranes may be affected independently in the direction of either an increased or decreased permeability, with a corresponding increase or decreas...

We report observations from time-lapse films of the development of Dictyostelium discoideum (Dd) stained with the vital dye neutral red. We have used this dye to enable us to track individual cells, as they move through multicellular tissues in later Dd stages. Our observations lead us to new conclusions about the control of cell movement and cell contact during Dd development, including the te...

Six different electron mediators were immobilized on the activated carbon (AC) anode and their effects on performance of a direct glucose alkaline fuel cell were explored. 2-hydroxy-1, 4-naphthoquinone (NQ), methyl viologen (MV), neutral red (NR), methylene blue (MB), 1, 5-dichloroanthraquinone (DA) and anthraquinone (AQ) were doped in activated carbon (AC), respectively, and pressed on nickel ...

while the oecd test guidelines and mostly animal assays have been used to study the toxic effects of chemicals for many years, very little is known about the potential toxicity of vast majority of inhaled chemicals. considering large number of chemicals and complex mixtures present in indoor and outdoor air, heavy reliance on animal test methods appear to be not adequate. continuing scientific ...

60% of chronic caval dogs with ascites did not respond to atrial natriuretic peptide (ANP) (75 ng kg-' * min-') with a natriuresis (TIVC-NR; AUNaV = 2±0.8 ,geq/min) whereas the remaining 40% responded normally (TIVC-R; AUNaV = 216±50 Ateq/min). Since proximal tubule neutral endopeptidase 24:11 (NEP) destroys most of intrarenal luminal ANP and kinins, we attempted to convert TIVC-NR into TIVC-R ...