To the Editor: human serum. For statistical analysis, serum samples that showed no detectable FasL were attributed a level of 30 pg/mL, equivalent to half of the lowest detectable concentration. The subjects tested Several reports have established an impotant role for Fas/Fas liwere 20 HIV-seronegative healthy controls, 28 asymptomatic HIVgand (FasL) interaction in mediating programmed cell dea...

Two basic premises of Bra z i l ’s Community Health Agents Pro g ram (PACS) are to value the family and community to which the pro g ra m belongs and to encourage their part i c i p a t i o n in health promotion and disease pre ve n t i o n . This study focused on the work developed by PACS in Ba u r u , São Paulo St a t e , as perc e i ved by the community health agents and the families s e rv...

American Journal of Botany 98(6): 975–985, 2011; http://www.amjbot.org/ © 2011 Botanical Society of America Seedling emergence, when the dormant seed germinates and begins life as a seedling, is the most fragile of stages in the life cycle of annual plants. The timing or phenology of seedling emergence can strongly infl uence plant fi tness, as well as the composition of a plant ’ s neighborhoo...

Named entities form the major components in a document. When we catch the fundamental entities, we can understand a document to some degree. This paper employs different types of information from different levels of text to extract named entities, including character conditions, statistic information, titles, punctuation marks, organization and location keywords, speech-act and locative verbs, ...