Table 1. Expression behavior of 1,270 transcription factors selected from all mouse genes (Ensembl release 52) based on GO IDs (Table 3) during osteoblast and adipocyte differentiation.

Transcription Factors		Osteoblast Differentiation
		↑	↓	↑↓	≈	Total
Adipocyte Differentiation	↑	22	6	4	70	102
	↓	25	40	21	132	218
	↑↓	3	5	2	2	12
	≈	42	26	7	863	938
	Total	92	77	34	1,067	1,270

Arrows indicate up- (↑), down-regulated (↓), or up- and down-regulated (↑↓) transcription factors. No change in expression is symbolized by the almost equal sign (≈).