31.   One goal was to develop a single vaccine, a magic bullet, which could deliver in a single dose most of the routine immunizations.

32.   Similarly, he said, a single dose of TV violence may not be critical, but repeated exposure takes its toll.

33.   Some people are allergic to Cipro, or ciprofloxacin, and become sick after even a single dose.

34.   The single dose at two days allowed a concentration of the drug in the blood for a full week that doctors believe will be beneficial to children.

35.   The protein substance is so powerful, the researchers report, that a single dose curbed the growth of the mice tumors.

36.   They crushed one of the blue pills and gave the baby a single dose through a feeding tube.

37.   Vials of vaccine are now made as single doses, requiring only one needle puncture, so that no preservatives need to be used.

38.   We are no longer dealing with the old-fashioned, pushover strain of head lice, snuffed out with a single dose of shampoo.

39.   Within three days of birth, her infant gets a single oral dose of the drug.

40.   About half got the single dose and half received the standard six weeks of radiation.