We are transparent about our research involving laboratory animals, which includes providing access to our annual statistics. On this page, you will find an overview of various aspects, such as the number of animals and the species we use, the types of research for which we employ animals, and the level…

This book examines the role of memory in animation, as well as the ways in which the medium of animation can function as a technology of remembering and forgetting. By doing so, it establishes a platform for the cross-fertilization between the burgeoning fields of animation studies and memory studie…

Would you like to know more about our research using laboratory animals or our studies on alternatives to animal testing? If so, take a look at the news articles on the right-hand side of the page (for mobile users, see the bottom of the page).

We use zebrafish as a model organism to study human development and disease as well as animal welfare and environmental impact.

Pharmaceutical companies, governments and the general public have become increasingly aware that animal models used in drug testing lack vital aspects to serve as an accurate representation of human biology. As models of the human body should become more physiologically relevant, animal models no longer…

PhD defence

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

As humans we have a tendency to judge certain actions as either right or wrong. Where does our moral sense come from? We found evidence that infants who are only one year old prefer those who comfort as opposed to ignore another who is sad.

The IBL PhD and Postdoc Association, also known as IPPA, seeks to create a platform for PhDs and Postdocs at the Institute of Biology Leiden to interact with one another. IPPA arranges social gatherings approximately four times each year, which include food and drinks, with the goal of integrating PhDs…

During post-embryonic development into adults, animals face an environment that fluctuates constantly. For example, in nutrient availability, temperature, and osmolarity (e.g., salt concentration).

Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

A new research line is the development of liquid biopsy fingerprints to predict early Alzheimer’s disease (AD) stage in human in readily accessible body fluids in human (in collaboration with: Dr. Geert-Jan Groeneveld, CHDR; Prof. Elga de Vries, Free University Medical Center; and others).

Promotor: Carel J. ten Cate, Co-Promotor: Hans W. Slabbekoorn

The Leiden Institute of Advanced Computer Science (LIACS) aims on doing applied research with partners. You can be involved in our research, and in the knowledge transfer of our research results.

This project aims to develop advanced data analysis methods for monitoring and increasing our understanding on biodiversity dynamics in nature reserves such as the Oostvaardersplassen.

Avian Cognition describes the full range of avian cognitive abilities, the mechanisms behind such abilities and how they relate to the ecology of the species. Synthesising the latest research in avian cognition, a range of experts in the field provide first-hand insights into experimental procedures,…

Within the two-year Astronomy master’s programme, you can choose from seven specialisations, ranging from fundamental or applied astronomy research in cosmology, instrumentation or data science, to combinations of astronomy research with education, management or science communication.

Looking for ways to travel more sustainably once you've reached your destination? Here, we offer some ideas and helpful links to guide you in becoming a more responsible tourist. Ecotourism, defined as "responsible travel to natural areas that conserves the environment, sustains the well-being of…

Being a better neighbour to the nature around you

Humans and songbirds learn their vocalizations early in life by exposure to the vocalizations of adult conspecifics. Often, better learning outcomes are achieved with live, social, tutors than with audio-only exposure to vocalizations.

Spaanse Water

Insights in diet, climate and ecology

Can the venom of snakes, scorpions and other animals be sources of new antibiotics?

A neuro-ecological perspective on adolescent prosocial development

The Governance of Crises research group at Leiden University focuses on both research and education. They offer students in-depth knowledge of crisis management, with an emphasis on prevention, response, and recovery.

Our mission is to recognise and treat stress and anxiety in children as early as possible, by connecting scientific research, clinical practice and education.

Five talks will be given during the Leiden Science Family Day: two children's lectures and three lectures for adults. Will you be there ?

The experimental approach of science applied to artistic research

Prof. Elizabeth de Lange is concerned with the allocation of resources for the conduct of science towards the goal of best serving the public interest. Also, while she underscores that there is still the need for using animals in drug research, she is concerned about this use, and advocates the use…

The thesis is about the study of shell evolution of the Hydrocenidae of the genus Georissa. This thesis started with a general overview on the evolutionary process of animals due to ecological changes.

In this thesis, I investigated the neurogenetic properties of Neotropical bat species. Bats represent the second largest mammalian order (Chiroptera) in the world, with Neotropical bats constituting about 13% of the total number of bat species.

S.S. Kolipaka’s thesis questions and investigates the survival prospects of reintroduced tigers and their offspring’s in the human dominated landscape of Panna tiger reserve in India.

New drugs for use as tuberculosis (TB) treatment are needed due to the constrains of classical antibiotics against TB and the rise of antibiotic-resistant strains, making TB a harder and harder disease to treat.

This PhD subproject concentrates on 16th-century ichthyology and takes Gessner’s Historia piscium (1558) (further HP) as its point of departure and focus.

Promotor: G.A. Persoon, Co-promotor: H.H. de Iongh

The aim of the Standard Operating Procedures for Research Integrity (SOPs4RI) project was to promote excellent research and a strong research integrity culture that aligns with the principles and norms of the ‘European Code of Conduct for Research Integrity’, and to counter research misconduct. The…

An international research team consisting of Katharina Riebel as leading PI and two international collaborators were awarded a Human Frontier Science Program grant for their proposal ‘Seeing voices’: the role of multimodal cues in vocal learning.

Researchers at Leiden University led by Mario van der Stelt (Leiden Institute for Chemistry) have set ‘gold standards’ for developing new painkillers based on the medicinal effects of cannabis. Publication in Nature Communications.

This project, under the supervision of Prof. Dr. Hans van der Plicht, comprises several studies aimed at the use of isotopes occurring naturally in organic material as tracers for both the climate change and its cultural impact at about 6200 BC. The research will be carried out by the co-applicant at…

The quantum nature of matter and light has grown into a broad and fruitful research field for theorists and experimentalists alike. It combines foundational research with toward applications, the most well known of which is the quantum computer.

Industrialised countries extract natural resources in the territories of indigenous peoples, and appropriate the knowledge and culture of these peoples. Leiden anthropologists work to protect the rights of indigenous peoples. Their knowledge and advice enable governments to source sustainable produc…

Leiden University's Citizen Science Lab supports and organizes initiatives where anyone can get started with scientific data and research. This is how we enrich research with insights from the community, make science accessible to all, and tackle important local issues together.

The two-years MSc programme spans the entire spectrum of Analytical BioSciences, Biopharmaceutics, Drug Delivery Technology, Medicinal Chemistry, Pharmacology and Toxicology.

In the master’s specialisation Computer Science and Business Studies, you combine high quality research in Computer Science with training in management and entrepreneurship. You will expand your knowledge of computer science and develop business and organisational skills that are essential to become…

Members of the collective explore what it means to be ‘human’, in the past and present, from a range of different perspectives and inter-disciplinary approaches.

What categories exist in the languages of pastoralists? Do these semantic concepts reflect universal or languagespecific tendencies? What (environment? culture?) governs the similarities (or the differences) attested crosslinguistically in cattle colour systems?

We investigate the processes underlying the patterns. We aim to explain biodiversity by investigating the distribution, function, development, and evolution of body forms, as well as physiological and behavioural variety among species. We collaborate with those specialized in describing, archiving,…

Great apes and the right to health