Analysis of protease activity of the environmental isolates.

<p>SDS PAGE (10%) analysis of culture supernatants (A). Lane 1: Protein markers (Pageruler, Fermentas) with molecular mass in kDa indicated on the left; Lanes 2 to 8, culture supernatants of Z2, Z3, P2, W1, W3, <i>V. cholerae</i> N16961 and <i>E. coli</i> DH5α, respectively. Protease activity of culture supernatants on 1.5% Skim milk agar plate (B). Sample identity has been indicated near each well.