Vitamin A or retinol is essential in embryonic development, the visual cycle and the immune system.

Xinrong Ma defended her thesis on 13 February 2018

Traditional drug discovery approaches have been hampered by (in vitro) cell-culture models that poorly represent the situation in the human body.

Supervisor: Gerard van Westen

Promotor: Prof.dr. W.T.F. den Hollander, Prof. dr. E.A. Verbitskiy

Provides a cutting-edge comparative political economy analysis of welfare and inequality across ten East Asian countries.

This thesis applies data mining in commercial settings in the telecommunications industry.

In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.

Lecture | Leiden Lectures on Arabic Language & Culture

When you apply for admission, you’ll be asked to submit several documents.

When you apply for admission, you’ll be asked to submit several documents.

When you apply for admission, you’ll be asked to submit several documents.

Promotor: Prof.dr. T.H.W. Bäck

On the 1st of November, Andrew Wigman successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Andrew on this achievement!

Promotor: J. Zaanen

An exploration across thirteen essays by critics, translators and creative writers on the modern-day afterlives of Old English, delving into how it has been transplanted and recreated in the twentieth and twenty-first centuries.

To achieve a more consistent and professional look in our scientific posters. A new template has been chosen. This design and its principal elements can be downloaded here.

The research described in this thesis centered on retaining exo-β-glucosidases implicated in health and disease, in particular the human inherited lysosomal storage disorder, Gaucher disease (GD).

Article by Dennis Broeders in the Journal of Cyber Policy on the (im)possibilities of addressing election interference and the public core of the internet in the UN GGE and OEWG.

Surreal Geographies recovers a forgotten archive of Holocaust representation. Examining art, literature, and film produced from the immediate postwar period up to the present moment, Kathryn L. Brackney investigates changing portrayals of Jewish victims and survivors.

The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.

On 19 September 2019, Lynette Janssen defended her thesis 'EU Bank Resolution Framework: A comparative study on the relation with national private law'. The doctoral research was supervised by Prof.mr. W.A.K. Rank and prof. M. Haentjens.

Promoter: J.G.E.M.Fraaije, Co-promotor: A. Kros

On 29 September 2020, Tom van Ham defended his thesis 'Collective violence offenders and offending. The role of individual characteristics'. The doctoral research was supervised by Prof. A.A.J. Blokland, Prof. O.M.J. Adang (RUG) and Prof. Th.A.H. Doreleijers (VUMC).

Cyber security is one of the critical challenges in our inter-connected world. Organizations are being constantly targeted by adversaries. Various critical systems become exposed on the Internet. Users can find that their data has been stolen from a company that they were not even aware of.

You’ve been accepted! Leiden University looks forward to welcoming you as a new student. Your next step is to prepare for your studies. Below you can find some tips to help you get a head start as you embark on your studies at Leiden University.

A part of the steel construction of the former Gorlaeus high-rise forms the basis of a new green bike park which is part of the redevelopment of the Faculty of Science.

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…

Indonesian translation of the book Recollecting Resonances from authors Bart Barendregt and Els Bogaerts.

When you apply for admission, you’ll be asked to submit several documents.

Natural product library for high throughput screening.

The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

Dr. Leila Akkari has been appointed professor by special appointment at the Leiden Institute of Chemistry (LIC) as per 15 December 2025. Her chair, entitled Cancer-Immune Interactions, has been established by the Netherlands Cancer Institute (NKI), where Dr. Akkari works as a researcher.

Check what has been published in the media about Heritage Quest and view the articles, webinars and video's the project has published.

One of the goals of the Citizen Science lab is to be an incubator for citizen science projects. Over the years, the lab has been involved in creating and supporting various projects. Get inspired!

Since the start of the Leiden University Green Office, several projects have been initiated to increase the awareness among staff and students and to make the university more sustainable. Read here about our finalized projects.

Between 1993 and 2000 the Faculty of Archaeology had a formal cooperation with the Service Régional de l’Archéologie de la Guadeloupe, Direction Regional des Affaires Culturelles (DRAC) and the then director André Delpuech. During that period surveys and excavations were carried out at a number of s…

On this page you will find an overview of awards and prizes granted to our staff and students in 2025, as well as special appointments at Leiden University and other institutions.

The map application includes information from old and new buildings archaeological projects. This makes it possible to investigate whether water facilities (wells, cisterns) and waste facilities (cesspits, sewers) were the privilege of Leiden’s wealthy elite in the late 16th and 17th centuries or whether…

What are the characteristics of impactful education for student application of inclusive design principles in design and technology programs?

The aim of the research project is to get insight in the biostratigraphical age and the palaeoecological setting of the Schöningen sites and hominin behavior and subsistence during the late Lower Palaeolithic.

The foundation of the ‘Leids Papyrologisch Instituut’ took place on 19 January 1935. Prior to then, the founders – J.C. van Oven (1881-1963, Roman Law), B.A. van Groningen (1894-1987, Greek) and M. David (1898-1986, Legal History) – had already been teaching Greek papyrology at Leiden University.

Whereas when we started the first Project the chief aim was pure research, to find out more about the past in a region, now we see that the countries of Europe are faced with the great problem that there are far too many archaeological sites for them to deal with by excavation, but yet some kind of…

Leiden University investigates biodiversity not only in the Netherlands, but also abroad, with the goal of improving global nature conservation. We do so in collaboration with local universities. Education is also high on our agenda.

An exploratory study on the role of family members of those who joined jihadist groups