Distribution of the Lingual Tonsils of Cattle Designated as Specified Risk Materials

Journal of Veterinary Medical Science

Keiko KATO²  Yasushi SAWADA¹ 

[1] Shibaura Meat Sanitary Inspection Station, Bureau of Social Welfare and Public Health, Tokyo Metropolitan Government;Animal Care and Consultation Center, Bureau of Social Welfare and Public Health, Tokyo Metropolitan Government

关键词: BSE;    cattle;    lingual tonsils;    specified risk materials (SRM);    tongue;   

DOI  :  10.1292/jvms.70.251

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(12)Cited-By(1)The tonsils of cattle, including palatine tonsils, pharyngeal tonsils, tubal tonsils and lingual tonsils, are designated as specified risk materials (SRM). However, the detailed distribution of lingual tonsils in cattle is unknown. We therefore histologically examined their distribution in 198 tongue specimens from cattle. The examinations confirmed that the presence of lingual tonsils was limited to the tissue of the lamina propria on the dorsal and lateral aspects of the tongue, not reaching the muscular layer below. More than 90% of the lingual tonsils were located between the distribution center of the vallate papillae and the radix linguae (root of the tongue). However, they were also found in the area extending from the lingual torus to the rostral-most vallate papilla in an individual, suggesting that the complete removal of the lingual tonsils requires elimination of the lamina propria extending from the lingual torus to the radix linguae.

【 授权许可】

Unknown