These three e-learning modules focus on the biology, diagnostics and clinical characteristics of B-cell lymphomas. They have been developed for 2nd year medical students by Dr. Arjan Diepstra, pathologist and the E-learning development team of the UMCG and the University of Groningen. For optimal experience of included 3D-models, animations and interactive quizzes it is advised to use the Firefox or Chrome browser. Guests can login by using the guest account (username: umcg-guest, password: e-learning_umcg20).