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Fig. 5. Erg4 and Ncp1 affect invasive growth. (A) Agar invasion. 105 cells of the indicated strains were spotted on a YPD plate and incubated for 2 days at 30°C. Pictures were taken before and after gentle rinsing with water. Notice that ncp1
cells in a
1278b strain background, in contrast to the YPH499 background (Fig. 2A), grow like wild-type cells. (B) Filamentous colony morphology. The indicated strains were spread onto SC medium lacking glucose and were incubated for 18 hours at 30°C. Representative microcolonies growing on the agar are shown. (C) Single-cell morphology. Cells were treated as in B and were then scraped off from the plates, fixed with formaldehyde and briefly sonicated. (D) Actin localization. Cells were treated as in C and stained with rhodamine-phalloidin to visualize the actin cytoskeleton.