Flagellar motility and lipase secretion of
biotype 1 and 2 strains. Motility and lipase examinations were performed at 24 and 48 h, respectively. A Biotype 1 strain shows flagellar motility and lipase secretion, B Biotype 2 strain does not show flagella and lipase secretion. Flagella were examined by staining using a Flagella Stain (BD) and phospholipase activity was determined on tween 80-tryptic soy agar plates. Scale bar 10 µm.