. 2012 Dec 18;3(6):e00378-12. doi: 10.1128/mBio.00378-12

TABLE 1.

Structural features of the different pairs of bacterial strains included in this study^a

Bacterial species and strain	Structural feature	Proposed elastic deformation model			E* (kPa)^b calculated by the Hertz model
Bacterial species and strain	Structural feature	h₀ (nm)^b	S₀ (10⁴ nm²)	E* (kPa)^b	E* (kPa)^b calculated by the Hertz model
S. epidermidis
ATCC 35983	Poor slime producer	11 ± 2	1.8	22 ± 4	7,190 ± 1,718
ATCC 35984	Strong slime producer	53 ± 7	8.3	8 ± 2	510 ± 160
S. salivarius
HB-C12	Nonfibrillated	28 ± 3	4.4	13 ± 2	1,320 ± 254
HB-7	Fibrillated (91 nm long)	44 ± 1	6.9	7 ± 1	593 ± 151
S. aureus
NCTC 8325-4	Wild-type	12 ± 2	2.0	47 ± 26	5,472 ± 3,020
NCTC 8325-4 Δpbp4	Deficient in peptidoglycan cross-linking	91 ± 2	14.2	10 ± 1	170 ± 62

^{^a}

Structural features of the different pairs of bacterial strains included in this study together with dimensions and reduced Young’s moduli of the contact cylinder between adhering bacteria and a glass substratum. The reduced Young’s moduli were obtained from the proposed elastic deformation model of the contact cylinder and from Hertz modeling of the compression data, pertaining to the soft, outermost cell surface and for an unknown part to the bacterial hard core (Fig. 1).

^{^b}

The values for h₀ and E* are means ± standard deviations for deformation measurements taken over 24 different spots on the glass substratum, comprising eight different bacteria.