Figure 1From: Identification and characterization of alkaline serine protease from goat skin surface metagenome Functional screening of metagenomic library for protease activity on skim milk agar plate. Metagenomic library consisting of 70,000 clones were screened on skim milk plate for protease activity. The positive clone showing zone of clearance in skim milk agar plate is indicated by an arrow.Back to article page