Author: Paul Kwan, Ph.D.
| Description: | The cortex stains darker than the medulla because the former is mostly
made up of densely packed lymphocytes. The cortex also appears to have
little holes in the tissue. This 'mooth-eaten" appearance is due to the
presence of macrophages sitting in a clear area among the tightly
packed lymphocytes. Notice the blood vessels at thr junctions between
the cortex and the medulla. PK2966-97. H&E Thymus. Immune system.
Dog. |
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