Cyclin: One of a group of proteins that regulate the cell cycle. The cyclins bind to and activate cyclin-dependent kinases.
The cyclins include cyclin A, cyclin B, cyclin C, cyclin D, cyclin E, cyclin F, cyclin G, cyclin H, cyclin K, and cyclin T.
The United States' cycling organization, including USPRO (track), USCF (road), NORBA (mountain biking), and NCCA (collegiate cycling) programs.
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Visits the world's number one source for cycling news, racing scores and standings. Cyclingnews.com: The world centre of cycling.
The California-based HTC-Highroad cycling team, which has fielded the most successful men's and women's teams in the world the past several years, fell ...