Abstract
Summary
The blood of normal and of jaundice-diseased silkworms and a highly infectious purified material isolated by Glaser and Stanley from the blood of diseased worms were studied in the ultracentrifuge. No difference between the bloods of healthy and diseased worms was observed by this method. Both contained a homogeneous component with a corrected sedimentation constant of 16 or 17 S and a very inhomogeneous, more slowly sedimenting component. The only component present in an optically detectable amount in the highly infectious purified material was found to have a corrected sedimentation constant of about 17 S.
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