Figure 4From: Inner capillary diameter of hypothalamic paraventricular nucleus of female rat increases during lactationPercentage distribution of inner capillary diameters in the PVN of virgin and lactating rats. Upper panels (white bars) represent data obtained from the magno- and parvocellular regions of the virgin group. Lower panels (black bars) represent data from the lactating group, which showed a tendency to have capillaries with larger internal diameters (for more details see text). Means ± SEMBack to article page