Table 1.

Concentration of antimicrobial peptide required for 50% killing of Group A Streptococci

Peptide (µm)	M1 10 mm phosphate	M1 10 mm Tris	M6 10 mm phosphate
hBD-1	N/K‡	3·28†	10·28‡
hBD-2	0·94*	0·135†	N/T
hBD-3	1·03*	0·47†	N/T
LL-37	1·82*	0·66†	N/T

N/K: no killing; N/T: not tested.

^*Mean of three experiments;

^†mean of two experiments;

^‡mean of four experiments.