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Table 3 Ranking of 3 commonly used reference genes for quantitative real time PCR experiments on oysters (spot: location on microarray, ID genbank: accession number, stdev: standard deviation, description: best BLAST hit description as described in GigasDatabase, CV: coefficient of variation, max: maximum value, min: minimum value, MFC: maximum fold change, p value: ANOVA 1 factor, P > 0.05, NR: Not Ranked)

From: Development of a Pacific oyster (Crassostrea gigas) 31,918-feature microarray: identification of reference genes and tissue-enriched expression patterns

RANK

spot

ID genbank

description (GigasDatabase)

MEAN

stdev

CV

max

min

MFC

p value

256

11936

BG467400

(sp:Q9YIC0) Elongation factor 1-alpha OS = Oryzias latipes GN = eef1a PE = 2 SV = 1

4.08

0.10

0.03

4.29

3.86

1.11

0.41

NR

10575

AJ544886

(sp:P56649) Glyceraldehyde-3-phosphate dehydrogenase OS = Panulirus versicolor PE = 1 SV = 1

6.17

0.20

0.03

6.57

5.79

1.13

< 0.05

NR

26871

AF026063

(sp:O17320) Actin OS = Crassostrea gigas PE = 2 SV = 1

6.41

0.16

0.02

6.67

6.01

1.11

< 0.05

  1. CV indicates the coefficient of variation and equals the standard deviation divided by the mean. MFC indicates the maximum fold change, i.e., the ratio of the maximum and minimum values observed within the dataset.