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. Author manuscript; available in PMC: 2017 May 15.
Published in final edited form as: Bio Protoc. 2016 Jul 5;6(13):e1858. doi: 10.21769/BioProtoc.1858

Table 1.

Calculation of the Relative Transcript Abundance using the ΔΔCt Method

ActD Treatment (min) Ct (Fos) Ct (Actb) Mean Ct (Actb) ΔCt* Mean ΔCt Δ ΔCt** 2−ΔΔCt Mean SD
0 27.2821 18.0651 18.0561 9.2260 9.2308 −0.0047 1.0033 1.0000 0.0046
0 27.2915 18.0470 9.2355 0.0047 0.9967

10 28.5733 18.0886 18.0314 10.5419 1.3112 0.4030 0.4183 0.0217
10 28.4676 17.9741 10.4362 1.2054 0.4336

20 30.2251 17.7979 17.7688 12.4563 3.2255 0.1069 0.1057 0.0018
20 30.2593 17.7397 12.4905 3.2598 0.1044

30 32.1141 18.0410 18.0095 14.1046 4.8739 0.0341 0.0295 0.0065
30 32.5635 17.9780 14.5540 5.3232 0.0250

45 34.6656 17.9821 18.0185 16.6471 7.4163 0.0059 0.0050 0.0012
45 35.1741 18.0549 17.1555 7.9248 0.0041

60 35.9865 18.2261 18.1696 17.8169 8.5862 0.0026 0.0026 0.0000
60 35.9577 18.1131 17.7881 8.5573 0.0027

90 38.0750 18.0576 17.9927 20.0823 10.8515 0.0005 0.0007 0.0002
90 37.5847 17.9279 19.5919 10.3612 0.0008

120 36.7232 17.8345 17.8792 18.8440 9.6133 0.0013 0.0009 0.0005
120 38.0775 17.9240 20.1983 10.9676 0.0005

240 38.0583 18.0231 17.9790 20.0792 10.8485 0.0005 0.0010 0.0006
240 36.7326 17.9350 18.7536 9.5228 0.0014
*

ΔCt = Ct (Fos, column 2) − Ave Ct (Actb, column 4);

**

ΔΔCt = ΔCt (column 5)−Ave ΔCt at time 0 (column 6).

Actinomycin D (ActD) was added after 30 min of TNF stimulation.