TSLP and influenza: To better understand the mechanism by which TSLP improves the efficacy of influenza vaccines, we monitored early immunological events by flow cytometry in draining lymph nodes of WT and Tslpr-/- mice infected with hvPR8-ΔNS1, a live-attenuated influenza A virus that cannot suppress cytokine production of the infected host (13, 26, 27).