Table 2. Physical outcomes of Day 10 embryos.

Results from gross examination of every embryo removed from the dam are reported. Non-exposed controls (CTL) and 10ppb TCE exposed (TCE) embryos are sub-categorized into 0mg/kg (0CTL and 0TCE), 2mg/kg (2CTL and 2TCE), and 8mg/kg folate (8 CTL and 8TCE) groups. Developmental staging was according to Kaufman, 1992. Reabsorptions indicate empty amniotic sacs and false pregnancy denote no pregnancy development in any way. The amount of embryos are shown on a per litter basis (n) and by the percent of embryos compared to the overall total per treatment group (%).

	control water			10ppb TCE water
	0mg folate	2mg folate	8mg folate	0mg folate	2mg folate	8mg folate
viable embryos	130	75	94	102	89	102
litters	22	9	11	17	13	17
False Pregnancy [n (%)]	0.18 (3.08)	0.22 (2.67)	0.18 (2.13)	0.24 (3.92)	0.08 (1.12)	0.11 (1.96)
Reabsorptions/Abortions [n (%)]	1.64 (27.69)	1.78 (21.33)	2.27 (26.60)	1.29 (21.33)	1.08 (15.73)	0.94 (16.67)
Under-development [n (%)]	0.77 (13.08)	0.67 (8.0)	0.82 (9.57)	0.35 (5.88)	1.08 (15.73)	0.50 (8.82)
Normal development [n (%)]	3.18 (53.85)	5.67 (68.0)	5.09 (59.57)	4.12 (68.63)	4.54 (66.29)	4.0 (70.59)

n = per litter basis

% = percent of total embryos