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. 1998 Dec;180(23):6260–6268. doi: 10.1128/jb.180.23.6260-6268.1998

TABLE 2.

Growth on contaminating material present in folate compounds, as revealed by bioautography

Compound applied to chromatogram Rf of:
UV-absorbing material Compound supporting the growth of E. coli BN1001
Folic acid 0.43 0.94
Folinic acid 0.17 0.94
p-Aminobenzoate 0.77 0.77
p-Aminobenzoyl-glutamate 0.94 0.94