In subsequent sections of a uteroplacental unit obtained in day 15 of pregnancy, the multilayered subplacenta (SP), and the initial sprouts that give origin to the placenta, expressed K1, MMP-2 and MMP-9

<p><b>Copyright information:</b></p><p>Taken from "Spatio-temporal expression of MMP-2, MMP-9 and tissue kallikrein in uteroplacental units of the pregnant guinea-pig (Cavia porcellus)"</p><p>http://www.rbej.com/content/5/1/27</p><p>Reproductive Biology and Endocrinology 2007;5():27-27.</p><p>Published online 2 Jul 2007</p><p>PMCID:PMC1934362.</p><p></p> Syncytiotrophoblasts composing the interlobium and the labyrinth expressed K1, MMP-2 and MMP-9 in sections obtained in days 20, 40 and 60 of pregnancy. Bar = 50 μm