1.   The physical symptoms occur as a result of too much oxygen and too little carbon dioxide.

2.   If symptoms of disease occurred during any five day reintroduction then that particular food was said to be suspect and was temporarily omitted from the diet.

3.   In this group further procedures were performed when recurrent symptoms occurred.

4.   Antibiotics are effective in killing the bacteria if taken before symptoms occur.

5.   For example, health workers are now asking parents the exact time of day when they visited the park and when symptoms first occurred.

6.   For Nasalcrom to work, users must take it for days before symptoms occur.

7.   For others, such symptoms may not occur, or they may be so mild that they cause no problems.

8.   Future improvements are up to both patients and doctors, who must remain alert to the possibility of appendicitis when suggestive symptoms occur.

9.   In addition, the symptoms may occur after the patient has left the clinic, Haynes said.

10.   It is not an anthrax vaccine but can be effective against the disease if treatment starts before symptoms occur.