Lars Lewejohann

Lars Lewejohann is a Professor at the Institute for Animal Welfare, Animal Behavior and Laboratory Animal Science, Department of Veterinary Medicine, Freie Universität Berlin. He also serves as head of the "Tierschutz und Versuchstierkunde" research group at the Bundesinstitut für Risikobewertung (BfR). His career spans key roles at Universität Osnabrück and Georg-August-Universität Göttingen.

• Education: Biology (WWU Münster, 1992-1999); Doctorate in Natural Sciences (University of Münster, 2004)

Research focuses on:

• Gene-environment interactions in serotonin transporter knockout mice
• Environmental enrichment effects on Alzheimer's disease models
• Refinement in laboratory animal science
• Behavioral phenotyping in semi-naturalistic settings

Article analysis reveals strong emphasis on animal welfare science, neurobehavioral adaptation, and experimental refinement, with key subfields including:

• Stress response mechanisms
• 5-HTT gene function
• Cognitive bias testing
• Neuroplasticity
• Home-cage monitoring
• Alzheimer's disease models

His work has been supported by the German Research Foundation (DFG SFB/TRR58) and frequently appears in journals like Behavioural Brain Research, Neurobiology of Aging, and Molecular and Cellular Biology. Collaborations with leading institutions across Germany and Europe underpin his research impact.