Another comparative research conducted by Davis University and USDA in 2004 provides the following information:  



Blueberry antocines help to strengthen collagen, the protein found in ligaments, tendons and cartilages.
According to a research published by The Journal of the Science of Food and Agriculture, blueberry proanthocyanidins/PACs inhibit the development of lung and colon cancerous cells, as well as in vitro leukemia cells.

Blueberry hippuric acid relieves the symptoms of urinary, renal and vesicular infections and minimizes antibiotic needs due to its excellent anti-adhesion properties to certain bacteria, such as escherichia coli.
Blueberry quinic acid acidifies urine, thus preventing urinary infections and avoiding calcium phosphate renal calculi formation.

Other researches conclude that drinking 250 cc blueberry juice a day gives better results than being treated with antibiotics. This strengthens the nutraceutic trend (food that benefits health and prevents and treats some illnesses) in comparison to the pharmaceutical trend.