1.   According to Glantz, even small amounts of tobacco smoke contain sufficient doses of toxic substances to trigger ill health effects.

2.   But in severe cases, children may need allergy shots, a series of injections containing minute doses of the allergen.

3.   Comic books, many of which contain liberal doses of sex and violence, are almost a national mania in Japan, read by children and adults alike.

4.   Each pen contains one dose.

5.   Manufactured by Gynetics, the kit offers step-by-step instructions, a pregnancy test and four birth control pills containing high doses of hormones progestin and estrogen.

6.   Newer pills contain lower doses of the hormone.

7.   The letter was accompanied by a packet of cookies, one of which contained a dose of pesticide strong enough to kill a young child.

8.   Sellers said he hopes the next phase of the research will answer that question as well as whether newer pills containing low doses of estrogen and progestin are safer.