Table 2.

Microscopic findings in myocardium of twenty owl monkeys with sudden death or euthanized.

Animal number	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Sex: Male (M) or Female (F)	F	F	F	M	M	F	M	M	M	F	M	M	M	F	F	M	M	M	F	M
Died (D) or Euthanized (E)	E	D	D	D	E	E	D	E	D	E	D	E	E	E	D	E	E	E	E	E
“Wavy” myofibers	x	x	x	x	x	x	x	x	x	x	x	x		x	x	x	x	x	x
Coagulation necrosis			x	x		x	x		x	x		x			x					x
Interstitial edema	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x		x		x	x
Hemorrhage	x	x	x									x
Nuclei pyknosis	x	x	x	x	x	x	x						x	x	x	x	x	x	x	x
Myocyte hypereosinophilia	x	x	x	x	x	x	x	x	x	x	x	x	x		x	x	x	x	x	x
Contraction band necrosis	x	x		x		x		x		x				x			x	x		x
Neutrophilic infiltrate			x																x
Loss of nuclei & striations	x						x		x	x	x	x	x	x	x	x	x	x	x	x
Disintegration of dead myofibers			x									x								x
Macrophages			x			x						x	x	x	x				x
Lymphocyte/plasma cell infiltra		x	x	x		x			x			x	x	x	x	x			x
Eosinophil infiltrate			x									x			x
Collagen deposition		x	x	x	x	x		x	x	x	x	x	x	x	x		x	x	x	x
“Anitschkow” type cells													x		x	x		x	x
Dense collagenous scar		x	x	x		x		x				x	x	x	x				x	x
Complement C9 immune stain	x	x	x	x	x	x	x	x	x	x	x	x	x		x	x	x	x	x	x

x, indicates presence/positive.