Extent of lymphocyte and plasma cell infiltrates into adventitia of bronchioles assessed by A. peribronchiolar lymphocytic (PbL) scores.

<p>FI-RSV-vaccinated lambs had significantly increased infiltrates compared to mock-vaccinated (MockVac) lambs. Controls lacked lesions. Extent of lymphocyte and plasma cell infiltrates into adventitia of blood vessels assessed by perivascular lymphocytic (PvL) scores (<b>B</b>). FI-RSV-vaccinated lambs had significantly increased infiltrates compared to control lambs. Mock-vaccinated lamb PvL infiltrates were not significantly different from control lamb levels. Controls lacked lesions. Control n = 4; MockVac n = 4; FI-RSV n = 4. Error bars = SEM, *<i>P</i><0.05, ***<i>P</i><0.001.