Related Experiment Video

Updated: Jan 22, 2026

Accessing the Cytotoxicity and Cell Response to Biomaterials
09:46

Accessing the Cytotoxicity and Cell Response to Biomaterials

Published on: July 8, 2021

4.5K

Cytotoxic 9,19-cycloartane Triterpenoids from the Roots of Actaea dahurica

Xu-Yan Wang1, Chuang-Jun Li1, Jie Ma1

  • 1State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica,Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China.

Fitoterapia
|July 9, 2019
PubMed

Keywords:
Actaea dahuricaCycloartaneCytotoxicityRanunculaceaeTriterpenoid glycoside

More Related Videos

Cytotoxicity Assays with Zebrafish Cell Lines08:22

Cytotoxicity Assays with Zebrafish Cell Lines

Published on: January 6, 2023

7.7K
Real-time Cytotoxicity Assays in Human Whole Blood08:27

Real-time Cytotoxicity Assays in Human Whole Blood

Published on: November 7, 2014

12.7K

Related Concept Videos

Primary and Secondary Growth in Roots and Shoots03:02

Primary and Secondary Growth in Roots and Shoots

Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
60.2K
Root Mean Square00:57

Root Mean Square

If in an experiment, data values have a probability of being both positive and negative, neither the arithmetic mean, the geometric mean, nor the harmonic mean can be used to calculate the central tendency of the data set. In particular, if the positive and negative values are equally likely, the arithmetic mean is close to zero.
For example, consider the velocity of gas molecules in a container. The gas molecules are moving in different directions, which might impart positive and negative...
3.7K
Root-Locus Method01:19

Root-Locus Method

A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
484
Construction of Root Locus01:15

Construction of Root Locus

The construction of a root locus involves several key steps to analyze and visualize the behavior of a system's poles with varying gain. The number of branches in the root locus equals the number of closed-loop poles and is symmetrical about the real axis.
For positive gain values, the root locus exists on the real axis to the left of an odd number of finite open-loop poles or zeros. The root locus starts at the open-loop poles and traces the paths of the closed-loop poles as the gain...
405
Properties of the Root Locus01:05

Properties of the Root Locus

The root locus method is an invaluable tool for analyzing higher-order systems without needing to factor the denominator of the transfer function. A pole of the system is identified when the characteristic polynomial in the transfer function's denominator equals zero.
To determine if a point lies on the root locus, the criterion involves the sum of angles contributed by all poles and zeros to that point. Specifically, this sum must be an odd multiple of 180 degrees. The gain at any point on...
291
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
6.5K