PubMed=17944752; DOI=10.1111/j.1600-0714.2007.00617.x
Lisa J. Harper, Kim Piper, John E.A. Common, Farida Fortune, Ian C. Mackenzie;
Stem cell patterns in cell lines derived from head and neck squamous cell carcinoma.
J. Oral Pathol. Med. 36:594-603(2007)

PubMed=20426848; DOI=10.1186/1471-2407-10-166; PMCID=PMC2868812
Lisa J. Harper, Daniela Elena Costea, Luke Gammon, Bilal Fazil, Adrian Biddle, Ian C. Mackenzie;
Normal and malignant epithelial cells with stem-like properties have an extended G2 cell cycle phase that is associated with apoptotic resistance.
BMC Cancer 10:166.1-166.16(2010)