A cell type found in the gastrointestinal and respiratory tracts that is characterized by the presence of a tuft of blunt, squat microvilli (120-140 per cell). Function of this cell type is not known. [ http://openisbn.com/search.php?q=0517223651&isbn=1/ GOC:tfm http://www.ncbi.nlm.nih.gov/pubmed/15817800 ]