Bilateral lesions of suprachiasmatic nucleus eliminate circadian rhythms of oxygen consumption and the respiratory quotient in rats

Summary Bilateral lesions of the suprachiasmatic nucleus of the hypothalamus of rats abolished circadian rhythms of oxygen consumption and of the respiratory quotient (RQ). The RQ remained constant at a level intermediate between the maximum (about 1.0) and minimum (about 0.9) values in control animals.     

The effect of glycine on serum luteinizing hormone in adult female rats

The response of serum luteinizing hormone to glycine has been studied during the estrous cycle in adult female rats. I.p. administration of 200 mg of glycine significantly elevated serum luteinizing hormone levels at all stages of the estrous cycle.     

An initial phasic depolarization exists in the receptor potential of taste cells.

When frog taste cells were stimulated by varying salts after adaptation to water, quinine or acetic acid, a phasic depolarization appeared initially in the receptor potential of taste cells. The initial transient depolarization may be related to the enhancement of an initial phasic response in the taste nerve.     

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Rethinking the Fifth Discipline: Learning Within the Unknowable by Robert Louis Flood. Sami Potatoes: Living with Reindeer and Perestroika by Michael Robinson and Karim-Aly Kassam. The Self Managing Organization: How Leading Companies Are Transforming the Work of Teams for Real Impact by Ronald E. Purser and Steven Cabana.     

Location of functional regions of acetylcholine receptor alpha-subunit by site-directed mutagenesis

The availability of cloned cDNAs encoding the four subunits of the Torpedo acetylcholine receptor, which can be expressed to make functional receptors in Xenopus oocytes, has made possible a detailed investigation of the functions of the different structural components of the receptor. The functional analysis of receptors with alpha-subunits altered at specific sites by site-directed mutagenesis of the cDNA has allowed the location of specific regions of the alpha-subunit molecule involved in acetylcholine binding and forming a transmembrane ionic channel.