“…Much information exists regarding the environmental factors that control the yeast-tomycelium transition (Lee et al, 1975;Mitchell & Soll, 1979;Manning & Mitchell, 1980a;Mattia et al, 1982), and several studies have also been made concerning the biochemical (Chiew et al, 1980;Sullivan et al, 1983) and antigenic differences between the two types of cells (Chattaway et al, 1968(Chattaway et al, , 1976Svedsen & Axelsen, 1972;Manning & Mitchell, 1980b, c) as well as the cytology of the process (Soll & Mitchell, 1983;Gow & Gooday, 1984). However, a deeper understanding of the biology and pathogenicity of C. albicans has been hampered by the difficulties in carrying out genetic analysis in this species.…”