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Larger context for LACK in Corpus USbrown_UKbncw/US_brown.txt

  Also, interlobular air drifts may be all but nonexistent in the cow probably occur in the horse much as in the human being and, in contrast are present to a relatively immense degree on a segmental basis in the dog where lobules are absent (Van Allen and Lindskog, '31).   lack >   A reason for such wide variation in the pulmonary morphology is entirely lack ing at present.     Within certain wide limits anatomy dictates function and, if one is permitted to speculate, potential pathology should be included in this statement as well.   lack >   For example, the marked susceptibility of the monkey to respiratory infection might be related to its delicate, long alveolar ducts and short, large bronchioles situated within a parenchyma entirely lack ing in protective supportive tissue barriers such as those found in types 1, and 3,.     One might also wonder if monkeys are capable of developing bronchiolitis as we know it in man or the horse.   In addition, it would be difficult to imagine chronic generalized emphysema occurring in a cow, considering its marked lobular development but, conversely, not difficult to imagine this occurring in the horse or the dog.