Table 1. Detection of FGF2 in cell lysates and supernatants in a panel of Ewing tumour cell lines.

	Protein in
Cell line	Supernatant pg/106 cells	Cell lysate pg/106 cell
CADO-ES1	—a	47.3±6.9
RD-ES	—	0.75±0.009
RM-82	—	20.7±1.1
TC-71	—	35.5±4.1
VH-64	—	9.2±0.4
WE-68	—	78.9±0.6
L87/4 (BM stroma)	278.3±21.7	3422±110
Medium (10% FCS)	—
Medium (0% FCS)	—

^a–: values obtained were below the detection limit of 10 ng ml⁻¹.