title: Preliminary age-related histological studies of the lymphoid tissues of the respiratory tract and associated structures of the brushtail possum.
abstract: Abstract Extract Lymphoepithelium was observed in palatine and pharyngeal tonsils in possums from 2 months of age, but was not seen in the lung. Morphological maturity of lymphoid tissue occurred at about 4 months of age, coinciding with first emergence of young from the pouch. Peribronchiolar and/or perivascular lymphoid aggregations were first observed in the lung of a 3.5-month-old possum, and subpleural lymphoid aggregations were first seen at 7 months of age.
authors.affiliation: a Department of Veterinary Pathology and Public Health , Massey University , Palmerston North , New Zealand.
authors.forename: M M
authors.initials: MM
authors.lastname: Cooke