| KEY |
| ND1 | No data - 18S but not target
gene detected likely indicating low gene expression. |
| ND2 | No data - High Ct value for 18S indicating there was too little sample mRNA. |
| ND3 | No data - Reaction failed for other reasons. |
| 1 | 1 tissue culture replicates |
| 2 | 2 tissue culture replicates |
| 3/4 | 3 or 4 tissue culture replicates |