The following dichotomy is established for any pair F, G of hereditary families of finite subsets of N: Given N, an infinite subset of N, there exists M an infinite subset of N so that either ...

When estimating a treatment effect from observational data, researchers encounter bias regardless of estimation methods. In this paper, we focus on a particular method of estimation called Balance ...

Brigitta Stockinger. Although past studies that were largely carried out in vitro emphasized terminal commitment of effector T cells, it has now become clear that flexibility in T cell commitment is ...