Fig. 1From: A challenging case of carbapenem resistant Klebsiella pneumoniae-related pyogenic liver abscess with capsular polysaccharide hyperproduction: a case reportA. Sticky mucoviscous colonies of CRKP isolate. B. Hypermucoviscous colonies and positive string test of ST23 hvKp strain. A positive string test is defined as the formation of a viscous string > 5 mm in length when colonies grown overnight on a blood agar plate at 37 °C are stretched with a bacteriological loopBack to article page