viewpoint: china has the upper hand in cancer cell therapy. therapy, hdl particle size got smaller (not a good thing) and the hdl worked less effectively to remove cholesterol from the body," mehta said.. and prevention says hepatitis a is a vaccine-preventable, communicable disease of the liver caused by a virus. it is usually transmitted person-to-person or by consuming. november 2012  (20). february 2013  (20). november 2006  (23)