Figure 4. Hyperplasia histology analysis of the spleen in a transgenic mouse compared to a wild type mouse. Shown is a hematoxylin-eosin coloration of spleen taken from an eight-month-old wild type (A) mouse and an eight-month-old transgenic (B) mouse. Hyperplasia of the folliculi in the transgenic mice can be seen in (B). Both pictures were taken at 100X magnification.