Insulin oscillation oscillations. The insulin oscillations are generated by pulsatile release of the hormone from the pancreas. Insulin originates from beta cells located in the islets of Langerhans. Since each islet contains up to 2000 beta cells and there are one million islets in the pancreas it is apparent that pulsatile secretion requires sophisticated synchronization both within and among the islets of Langerhans. Pulsatile insulin secretion from individual beta cells is driven by oscillation of the calcium concentration in the cells. In beta cells lacking contact, the periodicity of these oscillations is rather variable (2-10 min). However, within an islet of Langerhans
Where Are You, Christmas? 2009, "Where Are You, Christmas" was covered by Hollie Steel, the child soprano from "Britain Got Talent" finals. On October 29, 2009, Then There Were None released a cover of the Christmas single. During a Christmas concert in 2011, a cover of the song was performed by The Piano Guys (Jon Schmidt, Steven Sharp Nelson), featuring Jon's young daughter Sarah Schmidt. Pentatonix covered the song for their 2018 album "Christmas Is Here!". Where Are You, Christmas? "Christmas, Why Can't I Find You?" is a song co-written by James Horner, Will Jennings and Mariah Carey, for the movie "How the Grinch