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Johns Hopkins Bloomberg School of Public HealthCAAT

Johns Hopkins University
Center for Alternatives to Animal Testing

We believe the best science is humane science. Our programs seek to provide a better, safer, more humane future for people and animals. To learn more about CAAT and the 3Rs, visit our About Us page. And consider supporting our mission.


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CAAT News and Upcoming Events

News and upcoming events sponsored by CAAT, CAAT-Europe, and the Transatlantic Think Tank for Toxicology (t4).

Updates on Activities Related to 21st Century Toxicology
May 12, 2021

Incorporating Non-animal Alternatives into Toxicity Testing Under TSCA
May 13, 2021

8th Annual 3Rs Symposium: Pandemic-Driven Advances
June 3-4, 2021

Microphysiological Systems World Summit

Virtual Conferences: 
June 24, 2021
Towards Regulatory Acceptance
Call for Abstract Submissions: Deadline May 14, 2021

December 9, 2021
Systems Engineering of Microphysiological Systems

Hybrid Conference (In-person and virtual)
NEW DATE: May 30-June 3, 2022
New Orleans, LA


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CAAT and CAAT-Europe promise sound scientific synergy involving experts from both sides of the Atlantic to promote the implementation of human-relevant alternative approaches, the advancement of research, and the dissemination of the 3Rs.

Altertox April Newsletter

Altertox Article Featured in The Parliament Magazine

Altertox Academy: 2021 Training Courses

CAAT-Europe is housed at the University of Konstanz, Germany.


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CAATwalk Newsletter

Sign up for our CAATwalk Newsletter for the latest news about our activities! View the latest CAATwalk Newsletter (May 4, 2021)

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