Table 1. Salivary IgA secretion rate (μg/5 min).

	Saliva	Young (N = 17)		Elderly (N = 16)
		Morning	Afternoon	Morning	Afternoon
Swab	1st	588 ± 357	591 ± 304	697 ± 242	650 ± 240
	2nd	480 ± 292	530 ± 297	524 ± 187	536 ± 163
	3nd	503 ± 282	522 ± 293	492 ± 179	497 ± 141
Aspiration	1st	346 ± 199	293 ± 148	355 ± 215	396 ± 186
	2nd	263 ± 134	358 ± 239	264 ± 94	381 ± 153
	3nd	277 ± 159	306 ± 157	236 ± 94	320 ± 147

Values are means ± SD.