Fj. Riggle et al., Invasive lesions containing filamentous forms produced by a Candida albicans mutant that is defective in filamentous growth in culture, INFEC IMMUN, 67(7), 1999, pp. 3649-3652
A Candida albicans efg1 cph1 double mutant is nonfilamentous under standard
laboratory conditions and avirulent in mice. However, this mutant produced
filaments in the tongues of immunosuppressed gnotobiotic piglets and when
embedded in agar, demonstrating that an Efg1p- and Cph1p-independent pathwa
y for promotion of filamentous growth exists.