Co-culture Experiments
Co-culture Experiments - Related Videos
09:05
Generation of Oligodendrocytes and Oligodendrocyte-Conditioned Medium for Co-Culture Experiments
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Cited by 8 •
2020
Herein, we display an efficient method for the purification of oligodendrocytes and production of oligodendrocyte-conditioned medium that can be used for co-culture experiments.
07:35
The Multi-group Experiment
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2023
Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University A multi-group design is an experimental design that has 3 or more conditions/groups of the same independent variable. This video demonstrates a multi-group experiment that examines how different interethnic ideologies (multiculturalism and color-blind) influence feelings about diversity and actions toward and out-group member. In providing an overview of how a researcher conducts a multi-group...
01:12
What is an Experiment?
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2023
An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two variables. When one variable causes change in another, we call the first variable the explanatory or independent variable. The affected variable is called the response or dependent variable. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The...
06:58
The Factorial Experiment
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2023
Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University A factorial design is a common type of experiment where there are two or more independent variables. This video demonstrates a 2 x 2 factorial design used to explore how self-awareness and self-esteem may influence the ability to decipher nonverbal signals. This video leads students through the basics of a factorial design including, the nature of a factorial design and what distinguishes it from...
01:19
Thomson's e/m Experiment
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2023
In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam. A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
FAQs
Direct-contact systems allow neighboring populations to interact physically as well as through released signals. In contrast, a shared medium can permit communication through secreted molecules while limiting physical contact. Comparing these arrangements helps determine whether an observed change depends on cell-cell contact, soluble communication, or both, providing a more precise interpretation of how the populations influence one another.
Secreted molecules can alter the growth or behavior of another population without requiring direct physical contact. Their effects may reflect signaling, environmental modification, cooperation, or competition within the shared medium. Including a condition that separates populations while preserving access to the medium can help investigators distinguish communication through released substances from effects that require direct contact.
Separate cultures provide a comparison for the intrinsic properties of each population under otherwise comparable conditions. If a response appears only when populations are maintained together, the result is more consistent with an interaction-dependent effect. This comparison helps distinguish changes caused by communication, competition, cooperation, or environmental modification from behaviors that each population would show independently.
A useful design compares the combined populations with corresponding separate cultures and, when relevant, distinguishes direct contact from communication through a shared medium. Researchers should also consider whether the system contains cells, organisms, or microbial populations and identify the outcome of interest, such as altered growth or behavior. These comparisons make the interaction responsible for the result easier to interpret.
Researchers select the populations to examine, maintain them together under controlled conditions, and choose whether they will have direct contact or communicate through a shared medium. They then compare the co-culture with appropriate separate-culture conditions and assess changes in growth or behavior. This workflow connects the observed outcome to signaling, competition, cooperation, or environmental modification.
These systems are useful when biological behavior depends on interactions that isolated cultures cannot reproduce. Applications include modeling tissues, host-microbe relationships, immune responses, development, disease, therapeutic effects, and microbial ecology. By maintaining relevant populations together, investigators can examine how one population changes another and evaluate outcomes that emerge from their shared biological environment.