The applications of studying the early development of insects range from agriculture to material science.

Our research aims to develop drugs that boost the host immune response to better defend us against mycobacteria.

Regeneration is the ability of an organism to restore damaged or lost tissue with a functional replacement, and without scarring. Many lizards can regenerate their tails.

This thesis focuses on important life history traits and their trade-offs using two hexapod models. Particularly, the trade-off between immune defense and embryonic developmental speed is a central theme of this study.

A comparative study in the History of Modern Philosophy focused on the recourse to physiology on the part of two key figures, Spinoza and Nietzsche.

Consequences for sediment stability and seston trapping

The work described in this dissertation contributes to a better mechanistic understanding of nanoparticles in vivo. To achieve that goal, we used the zebrafish as a highly predictive pre-screening model of nanoparticles.

My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.

The zebrafish is a promising vertebrate model organism in early drug discovery and development.

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Dr. M. van der Zee

In September 2023 Social Justice Research, a journal from Springer Nature, published a ‘Special Issue on Veteran Reflections’. Eight ‘veterans’ analysed the current status of justice research and suggested new directions and refinements. Herman Steensma, guest member of the section Social, Economic…

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

Can we link multiple components from herbal extracts with their biological activities?

While Nietzsche's works and ideas are relevant across the many branches of philosophy, the themes of contest and conflict have been mostly overlooked. Conflict and Contest in Nietzsche's Philosophy redresses this situation, arguing for the importance of these issues throughout Nietzsche's work.

A complex community of microbes develops in the infant gut shortly after birth. We call this community the infant gut microbiota. The microbiota influences the health of the infant, which makes the composition and function of the infant gut microbiota an important topic to study.

Cardiovascular disease is the leading cause of death worldwide.

Filamentous Actinobacteria, such as Streptomyces, produce a plethora of chemically diverse bioactive metabolites that have found applications across medicine, agriculture and biotechnology.

Promotor: H.P. Spaink, A.H. Meijer Co-promotor: R. Marin-Juez

In this thesis I highlight the applications of Oxford Nanopore Technologies (ONT) sequencing. This technique is a relatively new approach in the sequencing field, where nanopores are embedded in a membrane, DNA molecules are pulled through nanopores and an electrical current serving as the sequencing…

Nietzsche's famous notion 'amor fati' is often associated with the Stoic maxim to 'live in accordance with nature'; we have to fully accept our fates in order to attain happiness. But is happiness really what Nietzsche's 'amor fati' is about? And how to account for all the fiercely critical remarks…

Do you have questions about the specialisation Molecular, Cellular and Organismal Biology? Please contact us.

Nietzsche has often been considered a thinker independent of the philosophy of his time and radically opposed to the concerns and concepts of modern and contemporary philosophy. But there is an increasing awareness of his sophisticated engagements with his contemporaries and of his philosophy's rich…

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

Being a Slave brings together scholars and writers who try to come to terms with the histories and legacies of European slavery in the Indian Ocean.

This project traces how, why, and under what circumstances scholars invoked the trope of “dogmatism,” especially in controversies. Relevant controversies from various fields, periods, and countries will be subjected to in-depth rhetorical analysis.

This research delves into the unique cultural approach of the Tenggerese people, an Indigenous community in East Java, Indonesia, regarding elderly care. It focuses on their traditional practices of bakti (‘filial piety’) and sayan (‘mutual aid’), deeply ingrained in the community's lifestyle and va…

The different kinds of cultural perspectives on health and disease of the participants are related to their knowledge, beliefs, values and practices manifested in various forms of lifestyle in Indonesia. The cultural diversity of the population is also related to differences in health behaviour.

Throughout the twentieth century, scholars, artists and politicians have accused each other of “historicism.” But what exactly did this mean? Judging by existing scholarship, the answers varied enormously. Like many other “isms,” historicism could mean nearly everything, to the point of becoming mea…

The archaeology of transregional exchange (1st millennia BCE-CE)

Greek papyrology is the science that is concerned with deciphering and studying all texts written in Greek on papyrus. Papyrus was the writing material of antiquity and was made from strips of the papyrus plant stuck together.

Met de H.E. van Gelder Onderzoeksbeurs wordt beoogd interdisciplinair onderzoek naar munten, bankbiljetten en penningen van een impuls te voorzien. De beurs heeft een waarde van € 10.000 en stelt de onderzoeker (m/v) in de gelegenheid een publicatie voor te bereiden en aan de hand daarvan vervolgonderzoek…

LUCIS organiseerde op woensdag 4 maart een speciale avond over journalistiek in Irak. Journaliste Judit Neurink en programmamaker Sakir Khader vertelden over hun ervaringen en recente werkzaamheden in het land. De avond stond onder leiding van Wendelmoet Boersema (politiek redacteur van dagblad Trou…

On the 3rd of April, Sebastiaan van der Lubben successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sebastiaan on this achievement!

We are currently gathering information about how safe Leiden’s residents feel. To do this, we are using online surveys that give us an idea of perceptions of safety in Leiden.

Vandaag de dag liggen statistische methodes aan de grondslag van beslissingen in allerlei facetten van het leven, van de gezondheidszorg en agricultuur tot de financiële sector en marketing.

Professor Joke Bouwstra has been elected as member of the Koninklijke Akademie van Wetenschappen (KNAW, The Royal Dutch Academy of Sciences). This is a very prestigious recognition and a great honor for Joke. You can find the announcement by the KNAW below (short version) and as an attachment.

Electoral promises are not always realized in the coalition agreement, and that is often at the expense of households. On an average they pay 4 billion euros more than planned. That is what the PhD research of Wimar Bolhuis shows. Several media reacted on his PhD research.

Een minuscuul cirkelvormig stukje DNA zorgt ervoor dat de darmbacterie Clostridioides difficile resistent raakt tegen een veelgebruikt antibioticum. Dat ontdekten wetenschappers van het Leids Universitair Medisch Centrum (LUMC) nadat artsen hen attendeerden op een patiënt met een moeilijk behandelbare…

They were called 'annoying brats', the group of campaigning scientists who in 1978 founded what is now an internationally acclaimed ecological research institute. Their stories and those of the current staff of the Institute of Environmental Sciences are described in the book 'Forty years of Leiden…

In juli 2024 is het boek 'Evaluatie Wet homologatie onderhands akkoord' uitgebracht. Het boek bevat het rapport van het evaluatieonderzoek van de Wet homologatie onderhands akkoord (WHOA) uitgevoerd door een onderzoeksteam van de Rijksuniversiteit Groningen en de Universiteit Leiden in opdracht van…

The world is full of wars, and no war is without its dead. What happens to the bodies of fatal casualties of armed conflict? The winner of the faculty Jongbloed Thesis Prize 2015 is Welmoet Wels (Public International Law). Her thesis Dead body management in armed conflict: paradoxes in trying to do…

How should European financial law best integrate considering the interaction of the relevant legal systems?

The better teaching is for pupils and students, the more solid the basis will be that we give them for their future careers. This type of teaching requires strong instructors and insight into the best ways in which pupils can be supported, and research at Leiden University is making a contribution in…

The Hague is a fast-growing student city in the Netherlands, offering great study and career opportunities to students from all over the world.

Mariëtte Huizinga, Dorien Graas and Anika Bexkens call attention to learning problems of children with mild intellectual disability in the classroom. Their new book aims to make it easier for teachers to respond to the specific educational needs of these children.

On Monday, 1 February a beautifully designed and accessible book appeared about two centuries of student financing and apprenticeship in the Netherlands, entitled Kansen in het Koninkrijk (‘Opportunities in the Kingdom’). The book was presented to Job Cohen, a Leiden University professor and chairman…