Aberdeen began the second period in a positive fashion and denied Falkirk the possession they enjoyed before the interval.

BBC: Aberdeen's Diamond flashes a header wide of the target

Ferguson made another switch during the interval, sending on Carlos Tevez for the ineffective Anderson, a positive move that reflected United's failure to build on their early domination.

BBC: Barcelona 2-0 Man Utd

Dr. CASTRO: Then if it's positive, you add another couple of weeks for drug resistance testing, so you can see already a month interval easily going by before you have any result where you can hang your hat on.

NPR: TB Traveler Exposes Diagnosis Problems