Table 2.

Proliferation of T lymphocytes from birds 5 weeks p.i. with AIV using flow cytometry.

Bird no.	CD4+ T lymphocytes (% of T cells)			CD8+ T lymphocytes (% of T cells)
	Uninfecteda	Infectedb	% Increasec	Uninfected	Infected	% Increase
I-1d	40.7	52.1	28	16.3	31.7	95
I-2	48.3	58.4	21	12.1	20.5	69
I-3	49.6	60.9	23	17.8	25.9	46
I-4	55.9	59.5	6	18.5	31.7	71
I-5	43.9	53.6	22	9.55	18.5	94
C-1e	42.5	50.7	19	27.9	28.1	1
C-2	39.2	43.1	10	10.8	12.3	14

^aPopulation of T lymphocytes after stimulation with uninfected APCs.

^bPopulation of T lymphocytes after stimulation with infected APCs.

^cIncrease in the population of T lymphocytes following stimulation with APCs expressing AIV.

^dI—Chickens infected with H5N9/Turkey/Wis/68 AIV.

^eC—Control chickens inoculated with PBS.