Immunofluorescence localization of SPP1 (polyclonal rabbit anti-human SPP1 IgG [LF-123
+ LF-124]) in frozen sections of uteri from nongravid and gravid horns collected from
unilaterally pregnant ewes on Gestational Days (D) 40, 80, and 120. Rabbit IgG (IgG)
serves as a negative control and is shown in Figure 8. scST, Stratum compactum stroma;
LE, luminal epithelium; PL, placental membranes; CTL, cotyledon; CAR, caruncle; SYN,
syncytia; V, blood vessel. Width of each field is 940 μm.