Where Vv is volume density, P (part) and P (ref)
are the number of test points falling in each desired
structure profiles and in the reference space,
respectively. In order to estimate the absolute volume
of a part, the volume density of that part is
multiplied by the total placental volume (11, 12).
All stereological analysis was done by two expert
histologists on blind coded sections. Data
analysis was performed using SPSS-18 software
and comparison between the groups was done using
nonparametric statistical test of Mann-Whitney
U test and p