Suspensions of Kluveromyces marxianus var. marxianus NRRLy2415 and active dry bakers' yeast were dead-end filtered in the range 30-500kPa. In all cases, the specific cake resistance, alpha, could be related to pressure, Delta P, through the expression alpha = alpha(o)(1 + k(c)Delta P) where alpha(o) and k(c) are empirical constants. For K. marxianus, the values of k(c) were 1.67 x 10(-5) Pa-1 and 2.39 x 10(-5) Pa-1 for suspensions with mean cell aspect ratios of 2.98 and 7.33 respectively. Values of k(c) for active dry yeast were 10.56 x 10(-5) Pa-1 in the case of unwashed cells with a mean aspect ratio of 1.21 and 7.94 x 10(-5) Pa-1 for washed cells with a mean aspect ratio of 1.20.