Vinegar test dry ice. Vinegar highlights tumors, which have more DNA, and therefore less water and more protein, than healthy tissue. As of 2011, Thailand has adopted the technique in twenty-nine of its (then) seventy-five provinces, and 500,000 women have been tested at least once. The vinegar test does have important limitations and disadvantages for cervical cancer screening, as well; please refer to that section in the main Cervical_screening article. Vinegar test Vinegar test is a cervical cancer testing method that uses acetic acid, a major component of vinegar. It has been found to be useful as an effective and inexpensive screening
Levulinic acid Levulinic acid Levulinic acid, or 4-oxopentanoic acid, is an organic compound with the formula CHC(O)CHCHCOH. It is classified as a keto acid. This white crystalline solid is soluble in water and polar organic solvents. It is derived from degradation of cellulose and is a potential precursor to biofuels, such as ethyl levulinate. In 1840 the Dutch professor Gerardus Johannes Mulder mentioned levulinic acid for the first time. He synthesized it by heating fructose with hydrochloric acid. The former term “levulose” for fructose gave levulinic acid its name. Although levulinic acid has been well known since the 1870s, it has never