did john lennon smoke cigarettes lights a cigarette after the Beatles' second press... News Photo John Lennon at Tittenhurst Park

Elevated numbers of macrophages have been reported in the airways of smoke-exposed mice and in human smokers (21, 3436)

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In a study using rats, gestational exposure to sidestream cigarette smoke was shown to be associated with an increased incidence of allergic asthma and bronchopulmonary dysplasia in both first- and second-generation offspring, suggesting the possibility of transgenerational transmission of harm (34)

Material from previous Globe stories was used in this report

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