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A truncated derivative of the phage endolysin LysK containing only the CHAP (cysteine-and histidinedependent amidohydrolase/peptidase) domain exhibited lytic activity against live clinical staphylococcal isolates, including methicillin-resistant Staphylococcus aureus. This is the first known report of a truncated phage lysin which retains high lytic activity against live staphylococcal cells.

Findings suggest methods of providing better care to ICD patients by offering them support and educational materials in their preferred modality. These data can aid in optimizing clinical care. Incorporating assessments of individual preferences into future clinical trial design is desirable.

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