Mature Cysts A pyogenic abscess(pus-filled cavity) nested may be caused by an infection due to illness or trauma Excystation Multiplication Abscess △ llbladder BADAM △A Some bacteria, such as Escherichia coli( e. coll) or staphylococcus(staph), tubercle bacillus or amoe ba caused liver abscesses 1313 Some bacteria, such as Escherichia coli ( E. coli ) or staphylococcus (staph), tubercle bacillus or amoeba caused Liver abscesses