Which health claims decreased in number during each year listed?

Explanation:

Health claims describe a relationship between a food substance (a food, food component, or dietary supplement ingredient), and reduced risk of a disease or health-related condition.

An example of an authorized health claim is, "Adequate calcium and vitamin D as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life."

this protocol provides a detailed procedure for chromatin immunoprecipitation (chip) to study the dna-protein interactions.