TABLE 1.

A summary of all the threshold force and effective viscosity (value ± 68% confidence interval) for single and double tether extraction from passive or treated neutrophils and CD4⁺ T-lymphocytes

		Single tether		Double tether		Double/single ratio
Cell type	Condition	F0 (pN)	ηeff (pN · s/μm)	F0 (pN)	ηeff (pN · s/μm)	F0	ηeff
Neutrophils	Passive	45 ± 6.5	1.57 ± 0.127	99 ± 10.6	2.95 ± 0.301	2.2 ± 0.6	1.9 ± 0.4
	IL8	91 ± 5.0*	0.40 ± 0.054*	176 ± 8.9*	0.83 ± 0.103*	1.9 ± 0.2	2.1 ± 0.6
	PMA	77 ± 4.4*	0.56 ± 0.078*	150 ± 7.5*	1.18 ± 0.196*	1.9 ± 0.2	2.1 ± 0.7
Lymphocytes	Passive	46 ± 3.7	1.55 ± 0.093	84 ± 6.3	3.65 ± 0.217	1.8 ± 0.3	2.4 ± 0.3
	IL8	52 ± 8.6	1.34 ± 0.199	95 ± 13.3	3.15 ± 0.541	1.8 ± 0.6	2.4 ± 0.8
	PMA	69 ± 9.9*	1.03 ± 0.217*	113 ± 7.0*	2.44 ± 0.240*	1.6 ± 0.4	2.4 ± 0.8

^*Denotes a significant difference (p < 0.05) versus passive cells (Zar, 1999).