. 2011 Dec 6;153(2):759–769. doi: 10.1210/en.2011-1699

Table 1.

Pgrmc1 and Pgr ISH grain densities in hippocampal neurons on 4-d and 30-d hormone schedules

	OVX	E2	P4	E2+P4
Pgrmc1
CA1
4–d	8.7 ± 0.6	12.5 ± 1.6^a	14.9 ± 1.8^a	13.3 ± 1.3^a
30–d	10.7 ± 1.4	13.8 ± 0.7^a	16.6 ± 0.6^a	14.4 ± 0.4^a
CA3
4–d	9.7 ± 0.6	13.5 ± 1.1^a	15.5 ± 1.3^a	15.9 ± 1.7^a
30–d	10.1 ± 1.0	13.1 ± 1.1^a	13.4 ± 0.5^a	13.4 ± 0.5^a
DG
4–d	5.1 ± 0.3	7.7 ± 0.9^a	9.3 ± 0.8^a	8.7 ± 0.8^a
30–d	5.1 ± 0.5	6.6 ± 0.6^a	7.4 ± 0.6^a	7.1 ± 0.1^a
Pgr
CA1
4–d	9.2 ± 1.0	14.4 ± 1.9^a	17.6 ± 0.7^a	16.5 ± 1.1^a
30–d	11.6 ± 1.4	16.2 ± 1.3^a	15.7 ± 1.3^a	13.2 ± 1.0
CA3
4–d	23.2 ± 2.0	25.8 ± 2.1	28.3 ± 0.7^a	28.9 ± 1.8^a
30–d	23.9 ± 0.9	27.0 ± 2.5	27.3 ± 0.8	26.3 ± 1.1
DG
4–d	4.1 ± 0.1	4.2 ± 0.2	4.4 ± 0.2	4.6 ± 0.2
30–d	3.0 ± 0.4	3.1 ± 0.4	3.5 ± 0.2	3.2 ± 0.4

Pgrmc1 and Pgr grain densities after hormone treatment. Emulsion-dipped slides for Pgrmc1 and Pgr were exposed for different times to achieve similar grain densities. Statistical comparisons were made within treatment groups for each receptor. Grain densities are means ± sem of six rats per hormone group for 4-d and five rats per group for 30-d schedules; 100 cells per brain in CA1 and CA3, and 120 cells per brain in DG. Pgrmc1:^a, P < 0.03 vs. respective OVX group. Pgr: ^a, P < 0.05, vs. respective OVX group.