Most of the microbial genes in the tongue community are formed of a limited number of oligotypes, according to the Human Microbiome Project (HMP). By linking each oligotype in the mouth to the ...

(Source: Jones B, ed. Normal and Abnormal Swallowing: Imaging in Diagnosis and Therapy. New York: Springer-Verlag, 2003, with permission.) ...

Researchers conducted dental examinations on more than 500 adults ages 70 to 80 in Hisayama, Japan. A coating was collected from a 15-mm-diameter circular area at the center of the patient's tongue ...