Because of the cellular complexity and spatial organization of the lun
g, investigation of the pathogenesis of human pulmonary diseases relie
s to a considerable extent upon the use of animal models. In this revi
ew, the author examines new models and new applications of existing mo
dels of pneumonia, asthma, emphysema, interstitial lung disease and ne
oplasms in laboratory mice and rats. Studies of such models may assist
in the development of appropriate strategies for early diagnosis and
intervention.