EL CID has started! This is the week when new students have the chance to get to know the city and student life. Some of the mentors and first-years introduce themselves.

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Prof. dr. A.H. Meijer

Promotor: Prof.dr. G.R. de Snoo

In this thesis, we used genetically engineered mouse models to identify genes and pathways that are involved in ILC formation and in the development of resistance to FGFR-targeted therapy.

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

This thesis focuses on using liposomes in two different treatment strategies; vaccination (or immunotherapy) and delivery of a small molecule, and in two different disease models; cancer and atherosclerosis.

In this article, Eamon Aloyo argues that university supervisors should not use student evaluations of teachers as a measure of teaching effectiveness.

This dissertation is concerned with the study of the less than twenty remaining precolonial Mesoamerican codices. By considering these rare and fragile pictographic and hieroglyphic books from the cultural biography perspective, many different aspects of these books can be studied.

The Medieval Institute at Western Michigan University is delighted to host the Wallace Johnson Program for First Book Authors, a program designed to provide support and mentorship to scholars working towards the publication of their first book on the law and legal culture of the early middle ages. In…

A technique originally developed for satellite imaging can now be used to recover pictographic texts from underneath the surface of a five hundred year old Mexican manuscript.

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

On Wednesday 25 June 2025 Dechun Zhang successfully defended a doctoral thesis and graduated.

'Communal Dining in in the Roman West' explores why the practice of privately sponsored communal dining gained popularity in certain parts of the Western Roman Empire for almost 300 years.

This thesis aims to develop model-based approaches to optimize drug dosing in patients with overweight and (morbid) obesity.

What are the goals of healthcare? That very question must be asked more frequently before healthcare-related choices are made. This is what Martine de Vries, Professor of Normative Aspects of Medicine, advocated during her inaugural lecture on Friday, 2 November 2018.

Adoptees in the Netherlands generally do not use more medication than their non-adopted peers.

Learning analytics tracks students’ online learning activities in order to support their learning. But what if most of their learning takes place offline, out of sight of digital eyes?

Promotores: T. Hankemeier; R. Berger, Co-promotor: R.J. Vreeken

Promotor: J.A. van Veen, Co-promotor: E.E. Kuramae

Bacteriophages, or phages for short, are the most abundant biological entity in nature. They shape bacterial communities and are a major driving force in bacterial evolution.

SAILS Professor Gerard van Westen tells us about his first 100 days 'in the office'.

Lifelike gods, provisional professors and the city militia with weapons a clanking. Leiden put on a colourful procession and drummed up hundreds of citizens to celebrate the foundation of the first university of the Republic of the Netherlands on 8 February 1575. 'It wasn't a party just for the sake…

This month, the NISIS publication “Islamic Studies in the Twenty-first Century: Transformations and Continuities” was published by Amsterdam University Press. This volume brings together contributions of various speakers at past NISIS Autumn Schools, providing an overview of important issues in the…

In an innovative study, Radboudumc and LUMC jointly tested a candidate vaccine based on a genetically weakened malaria parasite. The results of this clinical trial, published in Science Translational Medicine, show that the vaccine is safe and elicits a defense response against a malaria infection.

Master Vitality and Ageing’s (V&A) alumnus Willeke Ravensbergen conducted for her master’s thesis research on the impact of combinations of future trends on healthcare utilisation of older people in collaboration with the National Institute for Public Health and the Environment (Rijksinstituut voor…

Two talented academics from Leiden who recently obtained their PhD have been awarded a Rubicon grant by the Dutch Research Council (NWO). The grant enables them to gain experience at a knowledge institute abroad.

In this article, Marco Cinelli, assistant professor at Leiden University College The Hague, examines proper and improper uses of Multiple Criteria Decision Analysis (MCDA) methods in energy systems analysis.

One of the major limitations in culturing complex tissues or organs is the lack of vascularization in the cultured tissue. Development of a functional capillary bed could overcome this problem.

Real-life processes are characterized by dynamics involving time. Examples are walking, sleeping, disease progress in medical treatment, and events in a workflow.

Nowadays children grow up with social media. This may influence the development of brain regions involved in social interaction. In their review article in Nature Communications, Crone and Konijn illustrate how neuroscience can contribute to a better understanding of how media and peers influence adolescents'…

The Executive Board has appointed Ineke Sluiter and Arnold Tukker as distinguished professors at Leiden University.

In 2013, Thijs Porck wrote a guest blog for 'medievalfragments'...

An international team of astronomers have become the first in the world to detect isotopes in the atmosphere of an exoplanet. It concerns different forms of carbon in the gaseous giant planet TYC 8998-760-1 b. The research will be published in the scientific journal Nature on Thursday.

On 17 October 2019, the Netherlands’ Ministry of Infrastructure and Water Management organised a first stakeholders meeting on microfibers from textile in the LEF Future Center. The meeting was prompted by a report of the National Institute for Public Health and the Environment (RIVM) in April of this…

On Tuesday, January 30th, the first symposium of the Data Science Research Programme took place at the Sylvius Building.

Including modelling as part of software development appears to have various benefits.

Linde Desmaele explores the role of US theatre nuclear weapons stationed in Europe. Moving beyond the deterrence vs. reassurance debate

Generally the data from remote sensing surveys - the scanning of the earth by satellite or aircraft in order to obtain information about it - is screened manually in archaeology. However, constant monitoring of the earth's surface causes a huge influx of data of high complexity and high quality. To…

New finds demonstrate that Neandertals were the first in Europe to make standardised and specialised bone tools – which are still in use today. These firndings are reported by Leiden reseachers together with an international team of archaeologists in the PNAS journal (Proceedings National Academy of…

The Reformed Church removed preacher Caspar Coolhaes - Leiden’s first Professor of Theology – from office because of his advocacy of tolerance. PhD candidate Linda Gottschalk sheds new light on this controversial preacher.

Leiden Law School’s Grotius Centre for International Legal Studies is pleased to announce its first massive open online course (MOOC). On 18 January 2016, International Law in Action: A Guide to the International Courts and Tribunals in The Hague will go live on Coursera, an education platform that…

From Monday August 22th until Friday August 26th, The Hague Orientation Programme (The HOP) will take place. The first-year students of Leiden University in The Hague will get to know the city, their study and the university, the student life and their fellow students.

Drs. Julia Hillger won the first prize for the category

How can we make agricultural production systems more sustainable as the worldwide demand for healthy, safe food continues to grow? How can we develop healthy new food crops that have higher yields while requiring fewer harmful chemicals?

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No decorated signs on an overfull Lammermarkt but instead a video meeting that gradually fills up and the inevitable question of ‘Can everyone hear me?’ The 51st EL CID introduction week began online this week, on Wednesday 5 August. Because of the corona measures, most of the programme has been converted…

Hiltje Cleveringa seemed moved when on 16 January she was given the first copy of the biography of her father, Rudolph Cleveringa. Peppering his speech with a few cliff-hangers – including an incident concerning Churchill – biographer Kees Schuyt encouraged his audience to actually go read his book.

Indigenous Latin American artifacts have attracted the interest of Europeans since the earliest moment of contact between Europeans and the Indigenous peoples of the Americas. The ERC-funded BECACO project uses an innovative multidisciplinary framework to investigate the provenance of ethnographic and…

Mark Rutte, the Dutch prime minister, gave a guest lecture to first-year law students at Leiden University. He spoke about democracy, the war in Ukraine and the role of the Netherlands.