| Type | MGI:General | Description | mice administered doxycyline beginning at 21 days of age develop tumors on the lung surface as early as 90 days after doxycycline treatment most mice treated with doxycycline for up to 9 months exhibit visible lung tumors (2-30 tumors); tumors show multifocal adenomatous alveolar hyperplasia with papillary and solid adenomas mice in which doxycycline is removed after an 8-month treatment period show incomplete tumor regression |
