<http://schema.org/description>
"A new test for prostate cancer that measures levels of prostate specific  antigen as well as six specific antibodies found in the blood of  men with the disease is more sensitive and more specific than the  conventional PSA test used today, according to a new study."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.labmedica.com/immunology/articles/294735311/new_prostate_cancer_test_better_than_psa_test.html>