Table 2.

Supernatants of BAL cells containing G-CSF and GM-CSF delay death of control neutrophils in vitro that is blocked after cytokine neutralization

Exp.	Conditions	Neutrophil death, %
1	No treatment	47
	GM-CSF	61
	Supernatant of patient 1	63
	Supernatant of patient 1 + anti-G-CSF/anti-GM-CSF	41
	Anti-G-CSF/anti-GM-CSF	46
2	No treatment	50
	GM-CSF	71
	Supernatant of patient 4	60
	Supernatant of patient 4 + anti-G-CSF/anti-GM-CSF	53
	Anti-G-CSF/anti-GM-CSF	47
3	No treatment	53
	GM-CSF	67
	Supernatant of patient 5	66
	Supernatant of patient 5 + anti-G-CSF/anti-GM-CSF	55
	Anti-G-CSF/anti-GM-CSF	49

Control neutrophils were cultured at the indicated conditions for 36 h before neutrophil death measurements. The patient numbers correspond to those in Table 1. The concentration of the neutralizing mAbs was 5 μg/ml each.