Drug – bio-affecting and body treating compositions – Lymphokine
Patent
1979-04-04
1980-12-30
Rose, Shep K.
Drug, bio-affecting and body treating compositions
Lymphokine
A61K 3929
Patent
active
042423244
ABSTRACT:
An improved process for the preparation of hepatitis B antigen by subjecting plasma of hepatitis B donors to isopycanic banding wherein the step gradient is NaBr. Faster and more economical processing is obtained by multiple loading of the step gradient, either NaBr or conventional gradients.
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McAleer William J.
Wasmuth Edward H.
Levitt Julian S.
Merck & Co. , Inc.
Perrella Donald J.
Rose Shep K.
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