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Table 1 Comparison of periods and light pulse responses in mice with different genotype

From: Circadian behavior of mice deficient in PER1/PML or PER2/PML

Genotype

Periods

Light pulse ZT14

Light pulse ZT22

[phase delay]

[phase advance]

Hours (SEM)

Hours (SEM)

Hours (SEM)

WT (n = 6)

23.6 (0.1)

1.3 (0.1)

0.8 (0.2)

PER1 (n = 4)

22.8 (0.2)

1.5 (0.2)

0.5 (0.2)

PER2 (n = 8)

arrhythmic

N.D.

N.D.

PML (n = 12)

23.2 (0.2)

1.0 (0.1)

0.9 (0.3)

PER1/PML (n = 23)

22.2 (0.2)

2.0 (0.2)

1.5 (0.3)

PER2/PML (n = 6)

arrhythmic

N.D.

N.D.