Demonstration of microchimerism in pregnant sows and effects of congenital PRRSV infection

Table 1 Experimental design.

Dam	Parity	PRRSV inoculation at... gd^†	Euthanized at... gd	Number of fetuses
				Total	Female	Male
I₇₀	4	70	80	11	7	4
I₉₀-1	5	90	100	14	9	5
I₉₀-2	1	90	100	14	5	9
I₉₀-3	1	90	100	17	9	8
I₉₀-4	1	90	110	12*	8	2
I₉₀-5	1	90	110	16*	9	6
Con-1	1	-	100	13	7	6
Con-2	10	-	100	16	11	5
Con-3	6	-	100	15	7	8

^†gd: gestation day; -: not inoculated. *Due to mummification, the gender determination in two and one fetus from dams I₉₀-4 and I₉₀-5, respectively, was not possible.

ISSN: 1297-9716