(1.3 cm) in diameter. It contains two umbilical arteries and one umbilicalvein, through which the fetal heart pumpsbloodto and from the placenta, in which exchange ofnutrientand waste materials with thecirculatory systemof the mother takes place. The umbilical vein carries blood oxygenated in the...
Within the same placental villous tree, arteries, veins, and arterioles were immunopositive for OCLN, but the exchange vessels in terminal villi showed negative immunostaining, whereas the zo-1 was observed everywhere. Moreover, no significant differences in frequency, position, or dimension of TJ ...