Assertion: tonsil's cell | /r/HasProperty | kelsall
Facets:
Source sentences:
text: They are predominantly CD8+ and are relatively abundant, typically with 1 lymphocyte per 4–6 epithelial cells (Kelsall and Strober, 1999; Kuper et al., 2002; MacDonald, 2003; Pabst et al., 2005).