Figure 1From: Inner capillary diameter of hypothalamic paraventricular nucleus of female rat increases during lactationBlood vessels of the rat brain. Upper photomicrograph shows a representative unstained brain section illustrating networks of highly interconnected blood vessels. Lower photomicrographs show the inner diameter size (arrowheads) of three focused capillaries. Scale bars: 100 μm and 10 μm respectively.Back to article page