Panton Valentine Leukocidin (PVL) and thermonuclease (NUC) profile in clinical isolates of S. aureus and an assessment of impact of variations in nucleotide sequences of fem A, B and X genes Journal title: International Journal of Medical and Health Research Authors: Rosy Chikkala, Karuna Deepika, R Iyer, KS Ratnakar, V Sritharan Subject(s):