Swiss Authorities Say Sparklers Most Likely Caused New Year’s Fire An official said the sparklers were attached to bottles of champagne held too close to the ceiling. Forty people died and more than ...

Do you find giving presentations stressful? In this episode of Office English, Pippa and Phil talk about ways you can prepare for a presentation at work and improve your public speaking. Hello.

Antigen processing and presentation is the process by which protein antigen is ingested by an antigen-presenting cell (APC), partially digested into peptide fragments and then displayed on the surface ...