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Related Concept Videos

Damped Oscillations01:07

Damped Oscillations

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In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
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Types of Damping01:20

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If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
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Oscillations about an Equilibrium Position01:04

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Stability is an important concept in oscillation. If an equilibrium point is stable, a slight disturbance of an object that is initially at the stable equilibrium point will cause the object to oscillate around that point. For an unstable equilibrium point, if the object is disturbed slightly, it will not return to the equilibrium point. There are three conditions for equilibrium points—stable, unstable, and half-stable. A half-stable equilibrium point is also unstable, but is named so...
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Cellular Differentiation00:57

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How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
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Forced Oscillations01:06

Forced Oscillations

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When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
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Mechanism of Ciliary Motion01:05

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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
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Updated: Jun 21, 2025

A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis
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A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis

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Oscillation steers differentiation.

Kyle A LaBella1, Efren A Reyes1, Louis Vermeulen1

  • 1Discovery Oncology, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA.

Cell Stem Cell
|July 6, 2024
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Summary
This summary is machine-generated.

Researchers mapped enteroendocrine (EE) cell differentiation, uncovering early oscillating progenitor states. These progenitor states are crucial for generating the diverse range of terminal EE cells found in the gut.

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Area of Science:

  • Gastrointestinal biology
  • Stem cell differentiation
  • Cellular heterogeneity

Background:

  • Enteroendocrine (EE) cells are crucial for gut hormone production and signaling.
  • The developmental pathways leading to EE cell diversity are not well understood.
  • Understanding EE cell heterogeneity is key to addressing gastrointestinal disorders.

Purpose of the Study:

  • To elucidate the differentiation trajectories of enteroendocrine cells.
  • To identify key progenitor states involved in EE cell development.
  • To understand the mechanisms generating EE cell diversity.

Main Methods:

  • Single-cell RNA sequencing to profile EE cell populations.
  • Computational analysis to map differentiation trajectories.
  • In vivo models to validate progenitor cell function.

Main Results:

  • Identified distinct, early oscillating progenitor states in EE cell development.
  • Demonstrated that these progenitor states are critical drivers of terminal EE cell diversity.
  • Mapped the landscape of EE cell differentiation from progenitor to mature states.

Conclusions:

  • Early oscillating progenitor states are fundamental to generating enteroendocrine cell heterogeneity.
  • This study provides a comprehensive map of EE cell differentiation.
  • Findings offer insights into potential therapeutic targets for gut-related diseases.