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Fig. 4. Adenoviruses expressing mutant forms of Rho GTPases induce specific
expression of each protein in ECs. ECs were infected with either DN or CA Rho,
Rac or Cdc42 adenoviruses. Cells were allowed 24 hours to express proteins
before placing them in three-dimensional collagen matrices. Cultures were
allowed to proceed for 24 hours prior to preparing extracts. Samples were
loaded onto 12% SDS-PAGE gels, blotted to PVDF and probed with GTPase-specific
antibodies. Infection with GFP control adenovirus showed no signal (not
shown).