A method for inducing an immune response against at least one antibiotic resistant enterococcal strain in a vertebrate, said method comprising administering to said vertebrate an immunologically effective amount of {HEAD ~ an isolated compound} selected from {TAIL ~ the group} consisting of: 
selected from
A method for inducing an immune response against at least one antibiotic resistant enterococcal strain in a vertebrate , said method comprising administering to said vertebrate an immunologically effective amount of { HEAD ~ an isolated compound } selected from { TAIL ~ the group } consisting of :
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