Table 2. Endometrial EGF concentrations (ng/g of tissue weight) on day 3 at different parities in Holstein and Japanese Black cattle.

Breed	(n)	Parity
		0	1	2	3
Holstein	(28)	13.0 ± 3.4a	12.4 ± 3.3a	9.0 ± 2.0ab,A	7.5 ± 2.0b,A
Japanese Black	(47)	13.5 ± 2.1	14.2 ± 2.8	13.7 ± 2.0B	11.8 ± 1.7B

Values are means ± SD. ^ab Values with different letters within the same type of cattle differ significantly (P<0.05). ^AB Values with different letters within the same parity differ significantly (P<0.05).