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Generation and in vivo persistence of polarized Th1 and Th2 memory cells.
The attachment function of the Newcastle disease virus hemagglutinin-neuraminidase protein can be separated from fusion promotion by mutation.
Role of thiol/disulfide exchange in newcastle disease virus entry.
Conformational variation in structures of classical and non-classical MHCII proteins and functional implications.
Sources of tobacco for youths in communities with strong enforcement of youth access laws.
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Sources of tobacco for youths in communities with strong enforcement of youth access laws.
DiFranza JR, Coleman M. Sources of tobacco for youths in communities with strong enforcement of youth access laws. Tob Control. 2001 Dec; 10(4):323-8.
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PubMed
subject areas
Adolescent
Adult
Age Factors
Family
Female
Humans
Male
Parents
Residence Characteristics
Smoking Cessation
Smoking Prevention
Surveys and Questionnaires
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Joseph R DiFranza MD