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. 2001 Apr;69(4):2293–2301. doi: 10.1128/IAI.69.4.2293-2301.2001

TABLE 1.

Percentages of TUNEL-positive bovine macrophages (apoptotic cells) infected with logarithmic- or stationary-phase Salmonella serovar Typhimurium at 0, 20, 60, and 180 min after infection

Time (min) % of TUNEL-positive macrophages in the following samplesa:
Uninfected control Logarithmic phase Stationary phase
0b 14.47 ± 15.42 x 47.75 ± 34.45 Ay 38.51 ± 39.49 xy
20 5.40 ± 6.20 x 75.54 ± 28.34 ABy 42.51 ± 28.88 z
60 6.65 ± 5.36 x 81.32 ± 26.97 By 35.57 ± 31.92 x
180 2.78 ± 1.88 x 93.41 ± 5.53 By 71.22 ± 13.39 y
a

Values are means and standard deviations from five independent experiments. Different uppercase letters in the same column indicate significant difference (P < 0.05). Different lowercase letters in the same row indicate significant difference (P < 0.05). 

b

Time zero corresponds to macrophages incubated for 30 min at 37°C after challenge with Salmonella serovar Typhimurium (see Materials and Methods). 

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