"Salamat Dok" sits down with NIH-UP Manila Institute of Molecular Biology and Biotechnology Dr. Edsel Salvana to talk about HIV. He clarifies several misconceptions about the disease and explains how one can get infected with HIV. Quezon City Health Department HIV program manager Dr. Rolly Cruz also provides details on the process of voluntary and confidential free HIV testing conducted by some LGUs. Meanwhile, Rehabilitation medicine specialist Dr. Kristopher de Leon enumerates the causes and effects of osteoarthritis. The program then lists the pros and cons of eating 'balut' and 'penoy,' and learns the many health benefits of consuming rainbow food.