Table 3. Temporal expression analysis using real-time quantitative PCR.

Fold Increase	Fetal vs. Adult	Young vs. Adult	Fetal vs. Young	Fold Decrease	Fetal vs. Adult	Young vs. Adult	Fetal vs. Young
>2	145	188	90	>2	253	113	267
>5	92	85	47	>5	136	63	130
>10	68	48	27	>10	87	49	74
>100	23	23	2	>100	21	10	7

The number of miRNAs that exceed the indicated fold difference are tabulated for each pair-wise sample type comparison.