TY - GEN AU - Kubo,M TI - [Histopathological observations on the trachea of the germ free, conventional and sulfur-dioxide-exposed rats] SN - 0030-6622 PY - 1972///0626 KW - Animals KW - Basement Membrane KW - pathology KW - Cartilage KW - Environmental Exposure KW - Germ-Free Life KW - Lymphocytes KW - Mucous Membrane KW - Rats KW - Sulfur Dioxide KW - Trachea N1 - Publication Type: Journal Article ER -