FIGURE 2 Top: this 6-#m frozen section is from a liver perfused for 5 min with 4% formaldehyde, and
incubated in a conjugate made from the Fab of a rabbit immunized against rat LDL. Specific reaction
product is deposited along the bile canaliculi (circles) and close to the nuclei (N). Reaction product is also
present along the sinusoidal borders of the cells (arrows). • 105. Bottom: this 6-#m frozen section from the
same liver shown above was incubated in a conjugate made from the Fab of an unimmunized rabbit. Note
the absence of specific reaction product. • 130.