Fig. 3. Proteolytic inhibition in red clover extracts requires PPO. Proteolysis, as measured by amino acid release over time, was measured in leaf extracts from untransformed control (•) or PPO-Silenced () red clover. Results are the average ± SEM of three experiments using independently prepared extracts from NEWRC27–1 (2 replicates) and NEWRC30–0 and their corresponding controls.