Method for producing pertussis toxoid

Drug – bio-affecting and body treating compositions – Whole live micro-organism – cell – or virus containing – Genetically modified micro-organism – cell – or virus

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424 88, 435 68, 260112R, A61K 3910, C07G 700, C12P 2100

Patent

active

044552971

ABSTRACT:
A pertussis toxoid is produced by removing endotoxin from a culture supernatant of a Bordetella pertussis phase I strain or a concentrate thereof and flocculating pertussis exotoxin in the resultant fluid by permitting formaldehyde to act upon the fluid in the substantial absence of basic amino acid. The thus-obtained pertussis toxoid is low in toxicity and has a high immunizing potency.

REFERENCES:
patent: 3135662 (1964-06-01), Pope et al.
patent: 4029765 (1977-06-01), Helting et al.
patent: 4033819 (1977-07-01), Helting et al.
patent: 4075321 (1978-02-01), Relyveld
patent: 4242270 (1980-12-01), Ayme et al.

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