Deletion strains were grown individually at 30°C with
0.8ml liquid YPAD in 96-well microtiter plates with shaking (Dot Scientific,
U.S.A.); each well contained one 3.5 mm glass bead to facilitate mixing.
The cells were grown to stationary phase, then diluted and grown to
mid-log-phase (at least six generations). Cells were fixed by the
addition of formaldehyde to a final concentration of 3.7%, incubated
for one hour at 30°C, washed with PBS, resuspended in PBS, and examined
by phase-contrast and differential interference contrast microscopy.