Skip to main content
. 2003 Oct;41(10):4666–4670. doi: 10.1128/JCM.41.10.4666-4670.2003

FIG. 2.

FIG. 2.

Tm curves for three different PenI genotypes (penIA, penIB, and penIC). All PenS strains peaked within the same curve. Melting peaks were derived by plotting the negative derivative of fluorescence with respect to temperature (−dF/dT).