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. 2001 May 15;98(11):6289–6294. doi: 10.1073/pnas.101589398

Table 3.

Sensitivity of plaque formation to temperature and sodium citrate

Phage − Citrate 22° C + Citrate 22° C − Citrate 30° C + Citrate 30° C
After 1 days growth
 DAH1 NPD NPD 2.5 × 107 clear plaques 500 turbid plaques
 DAH2 NPD NPD 2.5 × 107 clear plaques 4 × 105 turbid plaques
 DAH4 NPD NPD   5 × 109 clear plaques 5 × 106 turbid plaques
 DAH5 NPD NPD 1.5 × 109 clear plaques 5 × 107 turbid plaques
 DAH6 NPD NPD   1 × 106 clear plaques 5 × 103 turbid plaques
After 3 days growth
 DAH1   1 × 105 turbid plaques NPD 2.5 × 107 clear plaques 500 turbid plaques
 DAH2   3 × 106 turbid plaques  10 turbid plaques 2.5 × 107 clear plaques 4 × 105 turbid plaques
 DAH4 2.5 × 107 turbid plaques 400 turbid plaques   5 × 109 clear plaques 5 × 106 turbid plaques
 DAH5   5 × 106 turbid plaques 300 turbid plaques 1.5 × 109 clear plaques 5 × 107 turbid plaques
 DAH6   1 × 105 turbid plaques  75 turbid plaques   1 × 106 clear plaques 5 × 103 turbid plaques

NPD, no plaques detected.