Pecorino Romano is a hard, salty Italian cheese, often used for grating, made out of sheep's milk (the Italian word pecora, from which the name derives, means sheep). Pecorino Romano was a staple in the diet for the legionaries of ancient Rome. Today, it is still made according to the original recipe and is one of Italy's oldest cheeses. Most of its production occurs in Sardinia. On the first of May, Roman families traditionally eat Pecorino with fresh fava beans during a daily excursion in the Roman Campagna.
HIV Tests For Screening and Diagnosis. There are three types of HIV diagnostic tests: antibody tests, antigen/antibody tests, and nucleic acid (RNA) tests. Antibody tests detect antibodies, proteins that your body makes against HIV, not HIV itself.
1 Combination tests have been developed that detect HIV antibody and the HIV antigen called the p24 antigen. 2  Levels of p24 antigen are typically high early in the course of infection. 3  A combination test may be performed to increase the likelihood that HIV infection is detected sooner after exposure occurs.ince there is no cure, early treatment of HIV infection and immune system monitoring can greatly improve long-term health and survival. Also, if a person knows his HIV status, it may help change behaviors that can put him and others at risk. Screening. Different types of antibody tests may be used for HIV screening: