This study describes the ultrastructural changes and distribution of P. multocida B:2 in the respiratory and gastrointestinal tracts of buffalo calves following oral exposure and compared with intratracheal exposure. Nine 8-month old buffalo calves were divided into 3 groups. https://www.roneverhart.com/Black-flower-Reversable-Tote-Bag-E05728-FRS-RB0/