60 
CARDIAC MODELS 
instituting a low salt diet, removing all feed 
additives and decreasing light intensity to re- 
strict activity. 
Chairman: I have a question. Did any of 
these animals recover completely? 
Dr. Jankus: That is difficult to answer. As 
we reported, about 50 percent of poults found 
to be diseased at four weeks of age make an 
apparent recovery. Grossly and by light micro- 
scopy some residual dilatation and endocardial 
fibrosis persist. We believe there is an entire 
spectrum of the "recovery" state, and the young- 
er the bird is when "recovery" is initiated, the 
less the residual lesions. Perhaps all progeny 
are diseased when hatched and those that make 
a complete recovery we call normal. I believe 
spontaneous recovery has also been reported 
in human cases of idiopathic cardiomegaly. 
