Table III.

The threshold cycle (CT) values for the replicate measurements of 18S rRNA (A) and infectious bursal disease virus (IBDV) (B) standard curves

A
	CT values for cDNA dilutions
Replicates of 18S rRNA standard curve	10−1	10−2	10−3	10−4	10−5
1	13.5	17.1	20.6	24.1	27.7
2	13.6	17.0	20.7	24.4	27.0
3	13.6	17.3	20.9	24.6	27.8
Mean	13.57	17.13	20.73	24.37	27.50
s	0.06	0.15	0.15	0.25	0.44
B
	CT values for cDNA dilutions
Replicates of IBDV standard curve	10×	50×	250×	1250×
1	24.4	26.7	29.6	30.8
2	24.4	26.7	29.4	31.2
3	23.9	27.0	29.5	31.2
Mean	24.23	26.80	29.50	31.07
s	0.29	0.17	0.10	0.23

S — standard deviation