Table 2. Experimental factors affecting the transcriptome.

Factor	Type			Figure
UV-Dose	Intentional	Controllable	Variable	3A
Recovery-Time	Intentional	Controllable	Variable	3B,C
Trp53-Genotype	Intentional	Controllable	Static	3D
Sample-Composition	Confounding	Uncontrollable	Dynamic	3B, 4, 5
Time-of-Day	Confounding	Uncontrollable	Dynamic	3B, 7, 8
Handling-Stress	Confounding	Uncontrollable	Dynamic	3E, 9
Biopsy-Stress
Individual-Mouse	Confounding	Uncontrollable	Dynamic	3F, 10