“…In individuals occupationally exposed to formaldehyde, genetic eVects have been observed in buccal or nasal mucosal cells (Ballarin et al, 1992;Kitaeva et al, 1996;Suruda et al, 1993;Titenko-Holland et al, 1996;Ying et al, 1997) and in peripheral lymphocytes (Bauchinger and Schmid, 1985;Dobias et al, 1988Dobias et al, , 1989Kitaeva et al, 1996;Suskov and Sazonova, 1982;Yager et al, 1986). In other studies, genetic eVects of formaldehyde exposure were not observed in peripheral lymphocytes (Fleig et al, 1982;Thomson et al, 1984;Vasudeva and Anand, 1996;Zhitkovich et al, 1996).…”