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Table 2 The proportion of variants A and B in the L-Zagreb samples: L-Zagreb master seed, L-Zagreb working seed and L-Zagreb final vaccine lots 1 and 2.

From: Genetic heterogeneity of L-Zagreb mumps virus vaccine strain

L-Zagreb sample

Variant (%)*

 

A

B

Master seed

93.0 ± 1.8

7.0 ± 1.8

Working seed

90.3 ± 1.1

9.7 ± 1.1

Final vaccine lot 1

80.4 ± 2.6

19.6 ± 2.6

Final vaccine lot 2

79.4 ± 2.9

20.6 ± 2.9

  1. * the arithmetic mean ± SD of four independent PCR-RFLP experiments