... the role of estrogen receptors in muscle glucose metabolism is unknown.Therefore, we investigated the expression of the two estrogenreceptors, ERa and ERb and their influence on regulation of GLUT4, ... rhythyms as their bases. The observables of the culture pro-vide us with a unique insight into the temporal organization of the living state in every cell and at all times.Lloyd D. and Murray ... expression cycles of BMAL1 and CLOCK, the two positive limb members of the molecular oscillators, by periodically repressing the transcription of these genes. In addition, REV-ERBalpha governs the circadianexpression...