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.
Different types of antibody tests may be used for HIV screening: 1  All HIV tests used in the U.S. detect HIV-1, and some tests have been developed that can also detect HIV-2. ( 2 HIV-1 is the most common type found in the United States, while HIV-2 has a higher prevalence in parts of Africa.).