Table 1.

Effect of shift to room temperature on ASW microcosm samples

StrainDayCFU/ml on HI-80 plates
Flask 1aFlask 2a
Initial3 days after temperature shiftInitial3 days after temperature shift
MLT40312b 6403.2 × 107 5102.9 × 107
13230<11503.1 × 107
1478<1903.2 × 107
15c 24<123<1
C7184-opaque25b 4802.4 × 106 3702.3 × 106
261702.4 × 106 240<1
27802.1 × 106 130<1
28c 25<154<1
MLT36726b 4602.5 × 107 3502.6 × 107
271203.1 × 107 803.0 × 107
2890<11002.8 × 107
29c 42<154<1
2400-11227b 3103.8 × 107 3003.8 × 107
281503.9 × 107 1404.2 × 107
29100<1894.3 × 107
30c 52<145<1
VV100931b 3902.4 × 107 3302.0 × 107
322002.0 × 107 2702.3 × 107
33120<1170<1
34c 92<1120<1
  • a Flask 1 and flask 2 are duplicate microcosms.

  • b Samples from all prior days exhibited regrowth.

  • c Samples from all subsequent days did not exhibit regrowth.