Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Medial degeneration. Histologic images showing grades of medial degeneration. (A) Normal aorta. (B) Mild medial degeneration characterized by pooling of proteoglycan between elastic lamellae. (C) Moderate medial degeneration with focal loss of elastic lamellae and proteoglycan deposition. (D) Severe medial degeneration with marked loss of elastic lamellae, SMCs, and extensive proteoglycan deposition. All Movat pentachrome stain [1].
