Table 1.

Hybridisation experiments

RNA no.	Microarray hybridisations
1	BCAR3 (R/BCS)	BCAR3 (E2 6 h)	BCAR3 (R/BCS)	ZR-75-1 (E2 6 h)	ZR-75-1 (E2 7 d)	ZR-75-1 (E2 7 d)	ZR-75-1 (E2 7 d)	ZR-75-1 (E2 7 d)
2	BCAR1 (R/BCS)	BCAR3 (R/BCS)	ZR-75-1 (R/BCS)	ZR-75-1 (R/BCS)	ZR-75-1 (R/BCS)	BCAR1 (R/BCS)	BCAR3 (R/BCS)	ZR/EGFR (EGF 7 d)

RNA samples were prepared from cell lines pretreated for 5 days in RPMI 1640 medium supplemented with 10% bovine calf serum (R/BCS) and subsequently cultured for the indicated durations in R/BCS medium supplemented with oestrogen (E2), epidermal growth factor (EGF) or R/BCS medium without further additions. All hybridisations were performed in duplicate with swapping of the dyes.