A) Overall percentage reduction in biomass and metabolic activity after 72-hour treatment with heparinized 40% ethanol lock solution. B) Percentage reduction in biomass and metabolic activity after 72-hour treatment with heparinized 40% ethanol lock solution according to species. C) Overall percentage of regrowth inhibition within 24 hours and 72 hours after 72-hour treatment with heparinized 40% ethanol lock solution. D) Percentage of regrowth inhibition within 24 hours and 72 hours after 72-hour treatment with heparinized 40% ethanol lock solution according to species. CV, crystal violet; XTT, 2,3-Bis-(2- methoxy 4-nitro-5-sulfophenyl)-2H-tetrazolium5-carboxanilide salt; CoNS, coagulase-negative staphylococci; MRSA, methicillin-resistant Staphylococcus aureus; MSSA, methicillin-susceptible Staphylococcus aureus.