title: Where does innate immunity stop and adaptive immunity begin?
abstract: The regulation of alternative splicing in the immune effector Dscam reported by Dong et al. (2012) in this issue of Cell Host & Microbe raises important questions about the nature of immune responses. Can we clearly define "adaptive" as being different from "innate" immunity, or is it time for a more flexible description?
authors.forename: Junaid
authors.initials: J
authors.lastname: Ziauddin
authors.forename: David S
authors.initials: DS
authors.lastname: Schneider