Table 2. Adhesion of SCLC cells to ECM constituents.

ECM component	BME	FIB	LAM	THR	PO
Cell line
GLC-2	++	+++	+++	+++	+++
GLC-36	+++	+++	++	++++	+++
H146	+	+	++	++	++
H1184	+++	+++	+++	++	++
SCLC-24H	+	-	+++	+++	+++

ECM constituents or PO were immobilized on plastic surfaces and offered as substrates. Protein concentrations used for coating were 20 µg/ml for BME, FIB and LAM, 40 µg/ml for THR and 50 µg/ml for PO. On a total area of 500 µm² the subarea covered with adherent cells was estimated. Values are given semiquantitatively: "−" less then 10, "+" 11–30, "++" 31–60; "+++," 61–80 and "++++" 80–100% of the total area were covered with adherent cells.