TABLE 1

Gestational age grouping, protein yield, and membrane marker enrichment of placentae

Data shown as mean ± S.D. Identical symbols next to the values (†, ‡, $, & or ^) denote significant differences between the respective values (Kruskal-Wallis test with Dunn’s multiple comparisons, P < 0.05).

T1T2Term
Day 1–98Day 99–196Day 273–287
Gestational age (days)63.1 ± 10.8117 ± 19.6N/A
Number of samples151915
Homogenate total protein yield (mg HP/g tissue)26.6 ± 8.520.1 ± 3.0†,‡28.5 ± 7.4
Membrane total protein yield (mg MP/g tissue)0.8 ± 0.4$0.7 ± 0.30.5 ± 0.2$
Membrane marker enrichment (fold)
Alkaline phosphatase3.0 ± 1.7&2.7 ± 1.2^4.2 ± 1.5&,^
Na+/K+-ATPase3.1 ± 2.32.7 ± 1.02.2 ± 1.1