TABLE 5.

Mean number of infiltrating CD68⁺ monocytes and LCA/CD45⁺ leucocytes stratified according to donor age and duration of stay in the intensive care unit

Age	Marker	Time in intensive care unit
		<3 days	3–5 days	≥6 days
≤25 years	CD68	116 ± 14	152 ± 20*	343 ± 50†
	LCA/CD45	34 ± 5	34 ± 16	116 ± 24†
>25 years	CD68	115 ± 5	168 ± 11†	281 ± 17†
	LCA/CD45	57 ± 4	60 ± 5	93 ± 11*
All ages	CD68	115 ± 4	166 ± 10†	283 ± 16†
	LCA/CD45	54 ± 3	58 ± 6	96 ± 10†

Data are means ± SE of cell numbers per 10 high power microscope fields.

*P < 0.05 vs. <3 days in the intensive care unit.

†P < 0.001.