Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

How has early development in R. ocellatus been modified as a result of its parasitic embryonic lifestyle?

The current resurgence of whooping cough is alarming, and improved pertussis vaccines are thought to offer a solution. Outer membrane vesicle vaccines (omvPV) are potential vaccine candidates, but omvPV-induced humoral responses have not yet been characterized in detail.

A high-end label: Cyclophellitol aziridine-type activity-based probes allow for ultra-sensitive visualization of mammalian β-glucosidases (GBA1, GBA2, GBA3, and LPH) as well as several non-mammalian β-glucosidases (see picture). These probes offer new ways to study β-exoglucosidases, and configurational…

Schistosomiasis is an acute and chronic disease caused by blood dwelling parasitic trematodes of the genus Schistosoma, and it is classified as the second most socioeconomically devastating parasitic disease, second only to malaria.

Matthew Broad recently joined the Institute for History as a lecturer in International Relations. He introduces himself.

Broad universities that focus strongly on fundamental research have the best chance of contributing to economic innovations, for example in the life and data sciences. This is the message of Professor Simcha Jong in his inaugural lecture on 14 November.

Parasitic worms and stomach bacteria suppress immune reactions such as allergic responses. Parasitologist Hermelijn Smits and lung specialist Christian Taube from the LUMC are trying to learn from these micro-organisms.

Chiodo

We developed the bitterling as a unique, well-studied model organism in the area of the evolutionary ecology of brood parasitism. The bitterling-mussel relationship, interspecific mussel host preference, and mussel gill structure are studied in detail, to help understand the developmental adaptation…

The infectious diseases malaria and tuberculosis are responsible for 2.1 million deaths every year. Leiden researchers are currently testing a new tuberculosis vaccine.

Promotores: H.A. Udo De Haes, P.M. Brakefield

The 2018 King's Speech was a string of statements containing little or no substance. It was obvious that, in an attempt to keep all the coalition parties happy, the speech covered more issues than in 2017. This is confirmed by an analysis of the speech carried out by public administration experts Gerard…

How can Staphylococcus aureus bacteria subvert the host immune system?

Our immune system protects us against disease, but every now and then, something goes wrong: an enemy invades our bodies or our immune system attacks our own cells and we become ill. Doctors and researchers at the Leiden University Medical Center (LUMC) want to be able to manipulate the immune system…

Coronavirus is generating a great deal of uncertainty throughout the world. Fortunately, there are some bright spots, such as the residents of Italian cities who are in quarantine trying to keep everyone's spirits up with their clapping and singing. Closer to home, Leiden historian Suze Zijlstra took…

Health workers have always sought ways to fight disease in vulnerable groups in the population. It is now clear that such research also benefits more prosperous countries. African worm infections and innovative thermometers have shown Leiden researchers how to fight diseases of affluence and keep health…

How humans and rats cohabit the cityscape and what consequences this has for both sides of the conflict?

Promotor: E.F. Smets Co-promotor: J. Geml

What is the function of the insect serosa?

Promotor: G.A. van der Marel, Co-promotor: D.C. Codée

Does roadside management in the mid-west USA increase invertebrate diversity similar to practices in Europe?

Americans more often donate funds to a presidential candidate if the campaign is backed by financiers from different, recognised social groups. This is the conclusion of Leiden researcher Vincent Traag in an article in Plos One published on 14 April.

To discuss this question, chairmen, members, and secretaries of the Research Integrity Committees (Commissies Wetenschappelijke Integriteit, CWI) of almost all Dutch universities gathered at the Leiden Observatory on 21 April. Also present were members of the committees from Leuven, Brussels, Ghent,…

What are the main factors associated with the stranding of the two seal species? What are the factors influencing the prevalence of disease in the two species? Which human-related factors influence the populations of the two seal species?

Who benefits from CXCR/CXCL chemokine signaling during infection: host or pathogen?

Can we enhance the capacity of host immune cells to kill mycobacteria via production of reactive nitrogen species?

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.

Of the 109 Spinoza Prizes that have been awarded since 1995, 26 have gone to researchers from Leiden University. The NWO Spinoza Prize is the highest Dutch award in science. The younger NWO Stevin grant goes to researchers who have achieved great success in the field of knowledge utilisation for society.…

When foreign matter enters our body, our immune system has to make a choice whether or not to go on the attack. There are times when the system goes wrong, and we end up with an illness or an allergic reaction. Researchers at LUMC are trying to steer the immune system. The dossier on Immunity, Infection…

For nine years he worked on the three-volume standard work Plant Galls of Europe. It yielded 2300 pages about 10,000 species of European galls, abnormal outgrowths in plants caused by parasites. Hans Roskam from the Institute of Biology Leiden: ‘The abundance of galls says something about the natural…

Our program specializes in creative exploration and a broad understanding of scientific research and technology. It prepares students for a career involving creative and critical thinking. Our alumni have a broad choice of career prospects: they hold positions ranging from academic researcher to creative…

With an MSc degree in Physics you are well prepared for broad array of career prospects in research or industry and have excellent career prospects: 90% of our graduates find a job within one month after graduation. The degree is also an excellent stepping stone for pursuing a PhD degree.

Drawing on a broad array of sources, this project examines modern retrievals of Bacon’s idols, thereby testing Justus von Liebig’s intriguing observation, back in 1863, that Bacon’s name lived on mainly in mottos or stereotypical phrases. More importantly, it examines the rhetorical purposes served…

Linguistic Choices in the Contemporary City focuses on how individuals navigate conversation in highly diversified contexts and provides a broad overview of state of the art research in urban sociolinguistics across the globe.

KNAW has elected eighteen new members, including two professors at Leiden University and one who studied and obtained his PhD in Leiden. The New Academy members will be installed at a later date this year.

Three Leiden professors have recently been awarded the most prestigious scientific accolade in the Netherlands: Maria Yazdanbakhsh and Marc Koper have been awarded a Spinoza Prize and Judi Mesman a Stevin Prize. They received their prizes on 13 October.

Interested in studying Modern Languages at Leiden University? Find out what our alumni said about this master's programme.

The facility develops and applies advanced, high-throughput methods for genomic research.

Developing and investigating statistical methods for complex data and models

The Executive Board and the Board of Education of the Institute of Psychology are responsible for the organisation. A number of committees offer specialised knowlegde, such as the Research Ethics Committee. Students have a say in programme committees.

At CWTS we have a long tradition of organising a weekly research seminar in which speakers present their research in the area of science studies and discuss their work with the audience. The seminar normally takes place on Friday, 15.00-16.15h (Central European Time). Presentations are given in Engl…

The combination of academic and professional skills taught in the CSM prepares you for a wide variety of careers in the rapidly expanding domain of security and crisis management, including public or private sector and policy-making positions.

The combination of academic and professional skills taught in the CSM prepares you for a wide variety of careers in the rapidly expanding domain of security and crisis management, including public or private sector and policy-making positions.

The combination of academic and professional skills taught in the CSM prepares you for a wide variety of careers in the rapidly expanding domain of security and crisis management, including public or private sector and policy-making positions.

The Social and Economic Psychology specialisation offers in-depth knowledge of a broad range of theories and research domains in this area, all concerning the way people’s social environment influences thoughts, feelings, and behaviour..

The combination of academic and professional skills taught in the CSM prepares you for a wide variety of careers in the rapidly expanding domain of security and crisis management, including public or private sector and policy-making positions.

High-quality education, a broad choice of courses, and an active international student life in Leiden and the Hague. Leiden University offers you the ideal basis for having the time of your life on an exchange or study abroad programme.

The combination of academic and professional skills taught in the CSM prepares you for a wide variety of careers in the rapidly expanding domain of security and crisis management, including public or private sector and policy-making positions.