1887

Abstract

SUMMARY: Concentrated strain 19 vaccine is shown to deteriorate in time, even at low temperatures (4–7°). The loss of viability of vaccine sealed in pure nitrogen can be expressed as a coefficient. The value of this coefficient may be derived from the formula of a straight line fitting the means of the logarithms of the viability counts made 1 week to 6 months after freeze-drying.

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/content/journal/micro/10.1099/00221287-19-2-324
1958-10-01
2021-10-23
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References

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