NMT in bovine lung homogenates: (A) NMT activity was determined in control and infected bovine lung homogenates described in Materials and Methods section using peptide substrate based on the N-terminal ends of pp60^c-Src (GSSKSKPKR). Values are mean of at least three independent experiments ± standard deviation (p = 0.00146). (B) NMT1 expression in bovine lung homogenates. Western blot analysis was carried out as described in Materials and Methods section. Band density was measured using NIH Image program.