Primate maternal placental angiography

A placenta with left dominant blood supply. Panel A, aortogram; Panel B, left iliac angiograms showing 6 cotyledons; and Panel C, right iliac angiograms showing 1 cotyledon. The angiograms display that the same cotyledon is supplied by both the left and right uterine arteries (overlapping supply 1/7, thin arrow). There is one cotyledon which is present in the aortogram, unaccounted for in the selective iliac angiograms, depicting evidence of a collateral supply (from the ovarian arteries, broad arrow). RT=radiotelemeter; FS=fetal skeleton. Anatomical landmarks, aorta, left ureter, aortic catheter position and left iliac position are also marked. The fading cotyledon is encircled in image B.

A placenta with ovarian blood supply. Panel A, aortogram showing 18 cotyledons (collateral supply, thick arrow); Panel B, left iliac angiograms showing 11 cotyledons (thin arrow depicts shared supply); and Panel C, right iliac angiograms showing 7 cotyledon (thin arrow depicts shared supply).