Herein are nine articles about the age-related alterations in both the innate and adaptive arms of the immune system, and about continuing hurdles in vaccinology.
With the housing crisis almost as dire in other parts of the country as it is in Florida, Mr. Gingrich will probably face a continuing hurdle with his ties to Freddie Mac.
The anti-war sentiment largely accounted for Dr. Dean's quick rise and solid base of support here; it has also proved to be a continuing hurdle for Mr. Gephardt, one of the authors of the war resolution, and Mr. Kerry, who voted for it.
She had her work cut out for her in a town where lingering animism (layered atop Islam) presented her with a continuing hurdle: if you believe that disease is the work of malignant spirits, you might not pay much attention to exhortations about improving your household sanitation.
Proficient oxygen supply to needy cells is a continuing hurdle faced by tissue engineering scaffolds.
Obstacles include continued technological hurdles, disputes over technology transfers by multinational automakers, and a broad wariness by the Chinese public regarding alternative-technology cars.
He continued clearing hurdles, although he remained hospitalized until March.
"From Volkswagen's perspective, the continuing legal hurdles mean that it is currently impossible to quantify the economic risks of a merger," the company said in a statement.
I worry that if this thought process continues, temporary hurdles will start to become viewed as a signal to start searching for greener pastures, leaving more and more companies — along with any difference they could have made — left for dead.
Earlier this month, Royal Dutch Shell postponed plans for drilling off Alaska's Arctic coast, as the company continued to face hurdles from wary Washington regulators.
