Table 4.

Percent of total IPV release measured during the first and second bursts.

Formulation	Initial burst (%)			Second burst (%)			Number of human doses released in total by 50 mg particles
Type 1	Type 2	Type 3	Type 1	Type 2	Type 3	Type 1	Type 2	Type 3
F1	90	64	88	3	14	2	0.6	1.2	1.0
F2	86	42	71	8	46	22	0.6	1.2	0.9
F3	90	53	76	6	42	17	1.0	2.0	1.0
F4	49	13	60	40	77	25	0.5	4.6	0.5
F5	67	9	34	27	83	53	0.1	3.4	0.9
F6	77	66	61	22	31	36	1.2	2.0	1.2
F7	69	53	62	23	37	29	2.0	2.0	1.9
F8	65	43	52	20	54	18	1.6	1.9	1.7
F9	20	46	53	70	50	34	0.2	4.6	1.6