Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Naturalistic Observations02:30

Naturalistic Observations

17.6K
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
17.6K
What is Conservation Biology?01:57

What is Conservation Biology?

24.5K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
24.5K
Observational Learning01:12

Observational Learning

1.0K
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
1.0K
Observational Studies01:11

Observational Studies

11.2K
Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
11.2K
Actor-Observer Effect01:23

Actor-Observer Effect

421
The actor-observer effect, a cognitive bias closely linked to the fundamental attribution error, refers to the tendency for individuals to attribute their behavior to external, situational factors while explaining others’ behavior in terms of internal, dispositional traits. This asymmetry in attribution significantly influences social perception and judgment.Cognitive Mechanisms Behind the EffectTwo primary psychological mechanisms contribute to the actor-observer effect: differences in...
421
Biological Effects of Radiation02:59

Biological Effects of Radiation

18.1K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
18.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

XL-MS-Guided Structure Prediction of Disordered <i>Encephalitozoon hellem</i> Proteins.

bioRxiv : the preprint server for biology·2026
Same author

Nocardiosis in Immunocompromised Hosts: A Retrospective, Single-Center Analysis of Clinical and Microbiological Determinants of Central Nervous System Involvement.

Transplant infectious disease : an official journal of the Transplantation Society·2026
Same author

Reduction of resources with mRNA host-response whole blood testing on patients presenting to the emergency department with suspected infections: a retrospective analysis of 30 cases.

Journal of medical microbiology·2025
Same author

Reply to Rattanapitoon et al., "Reconsidering the <i>Toxoplasma gondii</i> interactome: opportunities beyond crosslinking mass spectrometry".

mBio·2025
Same author

Laboratory Transmission of Adult Salmon Enteritis and Associated Pathogens in Juvenile Chinook Salmon (Oncorhynchus tshawytscha).

Journal of fish diseases·2025
Same author

Mapping a <i>Toxoplasma gondii</i> interactome by crosslinking mass spectrometry and machine learning.

mBio·2025

Related Experiment Video

Updated: Feb 16, 2026

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
08:57

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting

Published on: March 9, 2017

9.0K

Observations on bradyzoite biology.

Vincent Tu1, Rama Yakubu1, Louis M Weiss2

  • 1Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.

Microbes and Infection
|December 31, 2017
PubMed
Summary
This summary is machine-generated.

Toxoplasma gondii tachyzoites cause acute infection, while bradyzoites form latent cysts. Understanding bradyzoite biology is key to controlling toxoplasmosis reactivation in immunocompromised individuals.

Keywords:
BradyzoiteCyst wallDifferentiationLatent infectionMetabolismToxoplasma

More Related Videos

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography
08:04

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography

Published on: March 12, 2017

9.9K
Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.7K

Related Experiment Videos

Last Updated: Feb 16, 2026

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
08:57

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting

Published on: March 9, 2017

9.0K
Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography
08:04

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography

Published on: March 12, 2017

9.9K
Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.7K

Area of Science:

  • Parasitology
  • Immunology
  • Molecular Biology

Background:

  • Toxoplasma gondii exists as tachyzoites (acute infection) and bradyzoites (latent cysts).
  • Bradyzoite-containing cysts are immune-privileged, serving as a reservoir for disease reactivation.
  • Tachyzoites are cleared by the immune system, while bradyzoites persist.

Purpose of the Study:

  • To explore the biological mechanisms of Toxoplasma gondii bradyzoite interconversion.
  • To provide new insights into the biology of latent Toxoplasma gondii infection.
  • To understand the signals mediating tachyzoite-bradyzoite transformation.

Main Methods:

  • Utilized advanced research methods for studying T. gondii bradyzoites.
  • Investigated the interconversion process between tachyzoite and bradyzoite forms.
  • Examined the immune system's interaction with different T. gondii life stages.

Main Results:

  • Recent advances have enabled detailed studies on T. gondii bradyzoites.
  • New insights into the biology of latent infection have been provided.
  • The study highlights the importance of bradyzoites in persistent infection.

Conclusions:

  • Tissue cysts of T. gondii act as a critical reservoir for toxoplasmosis reactivation.
  • Understanding bradyzoite biology is essential for managing latent infections.
  • Further research is needed to elucidate the signals governing tachyzoite-bradyzoite transformation.