Jess and Morgan have worked in their part II projects for near six months in the Castello lab. They have studied different aspects of HIV biology by using cutting edge RNA biology, virology, molecular biology and microscopy techniques. Morgan has developed a new approach to elucidate the composition of the HIV ribonucleoproteins. Jess has assessed whether cellular RNA-binding proteins are incorporated into HIV particles. We hope they enjoyed working in the lab and wish them all the best for the coming scientific challenges.