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

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

Fungal food spoilage often starts with a contamination with spores. Experimental data strongly indicate the existence of subpopulations of spores with different levels of resistance to preservation methods.

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

How do mycobacteria subvert the defenses of host immune cells?

On 20 January 2022, Marco Stam defended the thesis 'Essays on Welfare Benefits, Employment, and Crime'. The doctoral research was supervised by Prof. M.G. Knoef.

This work is dedicated to interpreting in cohomological terms the special values of zeta functions of arithmetic schemes.

Leiden Law School has a methods portal that offers an overview of the various phases of empirical legal research.

On 13 October 2021 Ross Spence defended the thesis 'Collateral Transactions and Shadow Banking'. The doctoral research was supervised by Prof. M. Haentjens and Prof. A.M. Pacces (UvA).

Promotor: Prof.dr. G.P. van Wezel

Giliam de Valk, assistant professor at the Institute of Security and Global Affairs, was one of the speakers at the third congress of the National Thinking Tank Integral Security on 6 February.

This book aims to unravel some of the mysteries surrounding this exceptional group of larger-than-life Bronze Age blades.

NWO-funded audiovisual research into the experiences of migrants during major life events has culminated in new insights that can further our understanding of complex migration dynamics. The completion of this five-year project was marked with a roundtable event including international guests.

What’s really happening in the space between the cells in your body? With the Collagen Canvas project, students from Leiden University invite you to explore this question by blending science with art. This interactive artwork immerses you in the dynamics of the extracellular matrix—the invisible structure…

A day at the beach, games, a visit to an embassy and a pub crawl. The activities at HOPweek help new students get to know not just The Hague but each other too.

To relieve a patient's pain, it can be effective to induce expectations. This finding is promising for optimising the effectiveness of treatments, conclude Kaya Peerdeman and colleagues in their article in PAIN.

Receiving positive support and seeing yourself as being a quitter may help smokers quit, say Eline Meijer and colleagues. The health psychologists published their study in Social Science & Medicine.

If you imagine in advance that something is not going to hurt, this could mean you experience less pain. This discovery was made by health psychologist Kaya Peerdeman during her PhD research on the placebo effect. PhD defence 7 February.

Three student athletes from Leiden University are representing the Netherlands at the FISU Summer World University Games, a kind of Olympic Games for students.

Coen van Hasselt’s pharmacology group collaborated on a study recently published in the renowned Lancet Infectious Diseases. The international team mapped the antibiotic treatment of the life-threatening inflammatory reaction sepsis in newborn babies. They did this for low- and middle-income countries,…

Geriatrics needs to radically change. This is what Simon Mooijaart will say in his inaugural lecture.

How did people experience Islam on a day-to-day basis in the early centuries of Islam? That's where the papyri come in, says professor of Arabic Petra Sijpesteijn in the fourth video of the Leiden | Islam interview series.

The European Union has awarded a COFUND grant to a consortium of researchers from the universities of Groningen, Leiden and Eindhoven for a collective fellowship programme called ‘oLife’. The 6 M€ programme, which is co-financed by the participating universities, will recruit and train 18 post-doctoral…

Uniting an international consortium of scholars, the Skandapurāṇa Project comprises a team of researchers working in fields across the Humanities. We are creating a critical edition of a foundational work of purāṇic literature and, in doing so, tracing the dynamics of a textual tradition to better understand…

On Thursday the 15th of March, an exhibition displaying funerary masterpieces of Deir el-bersha was opened at the Egyptian museum on the occasion of 120 years of archaeological research at the site. The exhibit runs until 15 April.

What role do parent-child interactions play in the development, maintenance and treatment of depression in young people?

Professor of Ecotoxicology Martina Vijver of the Institute of Environmental Sciences has given a public talk at Paradiso Amsterdam for Science & Cocktails on 4 March 2019. Her presentation was called: 'The added value & added risk of size: nanomaterials'.

PhD defence

PhD defence

PhD defence

The underwater world around present-day Indonesia has changed greatly in recent centuries as a result of human activity. University lecturer Johannes Müller has been awarded an NWO XS grant to map the history of the Indonesian ecosystems.

Marieke Liem wrote a contribution for DJIzien, a magazine published by the Dutch Custodial Institutions Agency (Ministry of Justice and Security), about her meetings with long-term prisoners. ‘For my research on long-term prisoners I made numerous visits to Dutch prisons. During these visits, I came…

To be eligible for Bio-Pharmaceutical Sciences and Business Studies at Leiden University, you must meet the following admission requirements.

To be eligible for Bio-Pharmaceutical Sciences and Science Communication and Society at Leiden University, you must meet the following admission requirements.

To be eligible for Research in Bio-Pharmaceutical Sciences at Leiden University, you must meet the following admission requirements.

Project LAWKI (Life As We Know It) by PhDArts candidate Roosje Klap (ARK) won a Gouden Kalf Award 2022 for the Best Digital Cultural Production.

Archaeologist Annelou van Gijn received an NWO Archeologie Telt grant to investigate domestic craft and subsistence activities of late Neolithic peoples in the coastal area of the Netherlands

This new article by Bassant Hassib and James Shires is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

Plant architecture has distinct forms in different plant species, but also within a species the finalarchitecture of a plant is determined by its gradual development and changes therein induced by environmental conditions during the plant’s life cycle.

When did the Mali Empire disintegrate? What does the Sunjata heritage demonstrate about the political situation after 1600?

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

What are the circadian disturbances underlying depression vulnerability? How are they related to mood, cognition and sleep ?

If a new method has been developed to recognize and treat a (neuro-)psychological disorder or related behavioral factors, it cannot yet be used directly in clinical practice. First, the method should be evaluated, preferably in randomized controlled trials.

Leiden University College (LUC) offers a Liberal Arts & Sciences programme, which is small in scale and intensive. You will go through a selection procedure where our admissions committee will assess your fit for LUC. In order to be considered for admission all applications need to apply in Studielink…

The more we learn about a (neuro-)psychological or physical disorder and the related behavioral factors, the better we can not only identify them, but also treat them. It is therefore important that recent insights about (neuro-)psychological problems and related behavioral factors are incorporated…

This page provides information to support your application for the Master's programme of Bio-Pharmaceutical Sciences.

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.