SMITH, Judge.
Cycloserine, a water-soluble antibiotic is produced by bacterial cultivation on a nutrient medium. It is "amphoteric," by which is meant "a substance having both acid and basic properties." Hackh's Chemical Dictionary (3rd Ed.) Such a substance may act either as a weak acid or a weak base.
Appealed claims 2, 5, 6, 7 and 8 of appellants' application Ser. No. 487,704, filed Feb. 11, 1955, relate to the "Recovery of Cycloserine" from aqueous solutions...
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