LANE, Judge.
This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of both claims in appellant's application serial No. 566,084, filed July 18, 1966, for "penicillins." We affirm.
The claims are directed to benzyl- or G-type penicillins, and salts thereof, prepared by natural fermentation but lacking the high-molecular-weight antigens which cause anaphylactic reaction in penicillin-sensitive patients.
The claims...
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