a previous study from this laboratory showed that fibroblasts derived from skin biopsies of four hcmm/dns patients and one dns patient were significantly more sensitive to the cytotoxic and mutagenic effects of 4-nitroquinoline 1-oxide ( 4-nqo ) than three fibroblast cell lines from normal newborn males and one from a 45-yr-old normal donor .
C1512419
hcmm
C0013403
dns