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Heart
a: A spotty section.
b: HE staining ×40: Deposition of weakly acidic homogeneous amorphous material was visible.
c: DFS 4BS staining ×40; Positive.
d: Sinoatrial node HE staining ×40: Deposition of weakly acidic homogeneous amorphous material was visible.
e: Sinoatrial node DFS 4S staining ×40; Positive.
f: Atrioventricular node HE staining ×40: Deposition of weakly acidic homogeneous amorphous material was visible.
g: Atrioventricular node DFS 4S staining ×40; Positive.
