FIG. 2.

Presence of p40 in different mycoplasma species and M. agalactiae strains. Detection of the p40 gene in different species of mycoplasmas (upper panel) and strains of M. agalactiae (lower panel) was performed by Southern blot; 300 ng of genomic DNA was digested with HindIII, and digestion products were probed with the p40 DIG probe. The strain numbers refer to Table 1. The arrows indicate the fragments containing p40. Std, molecular mass standards (23.1, 9.4, 6.6, 4.4, 2.3, 2.0, and 0.6 kb).