TABLE 5.

Comparison of cell wall thicknesses among VRSA strains and their derivatives

Strain	Mean cell wall thickness (nm ± SD)a
	Parental strain	Passage-derived strain	Resistant mutant strain
Mu50	35.02 ± 4.01	24.45 ± 7.80	34.19 ± 4.96
MI	32.03 ± 3.60	24.13 ± 5.54	32.03 ± 6.75
NJ	34.52 ± 4.55	21.32 ± 5.64	28.83 ± 2.83
PC	32.42 ± 3.82	22.07 ± 6.55	31.85 ± 7.47
IL	30.27 ± 4.04	20.93 ± 6.06	30.05 ± 4.24
AMC11094	34.57 ± 4.82	24.04 ± 4.43	32.35 ± 4.95
99/3759-V	27.27 ± 3.44	21.13 ± 7.81	NDb
99/3700-W	29.42 ± 3.43	21.08 ± 6.11	ND
98141	27.12 ± 3.18	21.46 ± 5.82	ND
LIM2	31.43 ± 6.02	22.12 ± 6.79	29.80 ± 4.81
28160	27.65 ± 3.45	20.62 ± 5.47	ND
BR1	34.92 ± 7.18	20.67 ± 5.69	34.84 ± 5.47
BR2	31.04 ± 3.93	23.88 ± 4.56
BR3	31.45 ± 3.82	21.05 ± 7.85	30.14 ± 3.91
BR4	30.77 ± 4.62	20.75 ± 5.95	ND
BR5-1	31.72 ± 3.85	20.55 ± 6.34	ND
Mu3	26.53 ± 4.80
H1	25.99 ± 2.26
FDA209P	22.78 ± 1.85
N315	21.46 ± 2.25
ATCC 29213	21.08 ± 1.76
BR18	24.26 ± 3.96
BR22	24.57 ± 3.08

^aMorphometric evaluation of cell wall thickness was performed by using photographs of transmission electron mycroscopy images obtained at a final magnification of of ×30,000.

^bND, not done.